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    <link:label id="lab_ste_HCSMember_91DEEF8360EFE972AAC1518B735E8FA0_label_en-US" xlink:label="lab_ste_HCSMember_91DEEF8360EFE972AAC1518B735E8FA0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">HCS [Member]</link:label>
    <link:label id="lab_ste_HCSMember_91DEEF8360EFE972AAC1518B735E8FA0_documentation_en-US" xlink:label="lab_ste_HCSMember_91DEEF8360EFE972AAC1518B735E8FA0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">HCS [Member]</link:label>
    <link:loc xlink:href="ste-20200331.xsd#ste_HCSMember" xlink:label="loc_ste_HCSMember_91DEEF8360EFE972AAC1518B735E8FA0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ste_HCSMember_91DEEF8360EFE972AAC1518B735E8FA0" xlink:to="lab_ste_HCSMember_91DEEF8360EFE972AAC1518B735E8FA0" xlink:type="arc" />
    <link:label id="lab_ste_InterestrateAxis_676D4ABCC9BB43B2D143518B735E3492_terseLabel_en-US" xlink:label="lab_ste_InterestrateAxis_676D4ABCC9BB43B2D143518B735E3492" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest rate [Axis]</link:label>
    <link:label id="lab_ste_InterestrateAxis_676D4ABCC9BB43B2D143518B735E3492_label_en-US" xlink:label="lab_ste_InterestrateAxis_676D4ABCC9BB43B2D143518B735E3492" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest rate [Axis]</link:label>
    <link:label id="lab_ste_InterestrateAxis_676D4ABCC9BB43B2D143518B735E3492_documentation_en-US" xlink:label="lab_ste_InterestrateAxis_676D4ABCC9BB43B2D143518B735E3492" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Interest rate [Axis]</link:label>
    <link:loc xlink:href="ste-20200331.xsd#ste_InterestrateAxis" xlink:label="loc_ste_InterestrateAxis_676D4ABCC9BB43B2D143518B735E3492" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ste_InterestrateAxis_676D4ABCC9BB43B2D143518B735E3492" xlink:to="lab_ste_InterestrateAxis_676D4ABCC9BB43B2D143518B735E3492" xlink:type="arc" />
    <link:label id="lab_ste_LoanRate4MemberDomain_F170F8D891AB0EE340B3518B735EBC53_terseLabel_en-US" xlink:label="lab_ste_LoanRate4MemberDomain_F170F8D891AB0EE340B3518B735EBC53" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loan Rate 4% [Member] [Domain]</link:label>
    <link:label id="lab_ste_LoanRate4MemberDomain_F170F8D891AB0EE340B3518B735EBC53_label_en-US" xlink:label="lab_ste_LoanRate4MemberDomain_F170F8D891AB0EE340B3518B735EBC53" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loan Rate 4% [Member] [Domain]</link:label>
    <link:label id="lab_ste_LoanRate4MemberDomain_F170F8D891AB0EE340B3518B735EBC53_documentation_en-US" xlink:label="lab_ste_LoanRate4MemberDomain_F170F8D891AB0EE340B3518B735EBC53" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Loan Rate 4% [Member] [Domain]</link:label>
    <link:loc xlink:href="ste-20200331.xsd#ste_LoanRate4MemberDomain" xlink:label="loc_ste_LoanRate4MemberDomain_F170F8D891AB0EE340B3518B735EBC53" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ste_LoanRate4MemberDomain_F170F8D891AB0EE340B3518B735EBC53" xlink:to="lab_ste_LoanRate4MemberDomain_F170F8D891AB0EE340B3518B735EBC53" xlink:type="arc" />
    <link:label id="lab_ste_Years568IntRateMemberMember_6AE30747B9959799AD21518B735EDF66_terseLabel_en-US" xlink:label="lab_ste_Years568IntRateMemberMember_6AE30747B9959799AD21518B735EDF66" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Years 5-6,8% Int Rate [Member] [Member]</link:label>
    <link:label id="lab_ste_Years568IntRateMemberMember_6AE30747B9959799AD21518B735EDF66_label_en-US" xlink:label="lab_ste_Years568IntRateMemberMember_6AE30747B9959799AD21518B735EDF66" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Years 5-6,8% Int Rate [Member] [Member]</link:label>
    <link:label id="lab_ste_Years568IntRateMemberMember_6AE30747B9959799AD21518B735EDF66_documentation_en-US" xlink:label="lab_ste_Years568IntRateMemberMember_6AE30747B9959799AD21518B735EDF66" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Years 5-6,8% Int Rate [Member] [Member]</link:label>
    <link:loc xlink:href="ste-20200331.xsd#ste_Years568IntRateMemberMember" xlink:label="loc_ste_Years568IntRateMemberMember_6AE30747B9959799AD21518B735EDF66" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ste_Years568IntRateMemberMember_6AE30747B9959799AD21518B735EDF66" xlink:to="lab_ste_Years568IntRateMemberMember_6AE30747B9959799AD21518B735EDF66" xlink:type="arc" />
    <link:label id="lab_ste_Years144IntRateMember_8342AF76BB6241566E37518B735ED036_terseLabel_en-US" xlink:label="lab_ste_Years144IntRateMember_8342AF76BB6241566E37518B735ED036" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Years 1-4, 4% Int Rate [Member]</link:label>
    <link:label id="lab_ste_Years144IntRateMember_8342AF76BB6241566E37518B735ED036_label_en-US" xlink:label="lab_ste_Years144IntRateMember_8342AF76BB6241566E37518B735ED036" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Years 1-4, 4% Int Rate [Member]</link:label>
    <link:label id="lab_ste_Years144IntRateMember_8342AF76BB6241566E37518B735ED036_documentation_en-US" xlink:label="lab_ste_Years144IntRateMember_8342AF76BB6241566E37518B735ED036" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Years 1-4, 4% Int Rate [Member] - Interest rate for first four years</link:label>
    <link:loc xlink:href="ste-20200331.xsd#ste_Years144IntRateMember" xlink:label="loc_ste_Years144IntRateMember_8342AF76BB6241566E37518B735ED036" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ste_Years144IntRateMember_8342AF76BB6241566E37518B735ED036" xlink:to="lab_ste_Years144IntRateMember_8342AF76BB6241566E37518B735ED036" xlink:type="arc" />
    <link:label id="lab_ste_Years51512IntRateMember_8CCD880F53D6DEE0ED51518B735E496B_terseLabel_en-US" xlink:label="lab_ste_Years51512IntRateMember_8CCD880F53D6DEE0ED51518B735E496B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Years 5-15, 12% Int Rate [Member]</link:label>
    <link:label id="lab_ste_Years51512IntRateMember_8CCD880F53D6DEE0ED51518B735E496B_label_en-US" xlink:label="lab_ste_Years51512IntRateMember_8CCD880F53D6DEE0ED51518B735E496B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Years 5-15, 12% Int Rate [Member]</link:label>
    <link:label id="lab_ste_Years51512IntRateMember_8CCD880F53D6DEE0ED51518B735E496B_documentation_en-US" xlink:label="lab_ste_Years51512IntRateMember_8CCD880F53D6DEE0ED51518B735E496B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Years 5-15, 12% Int Rate [Member] - Interest rate for years 5-15 of the agreement</link:label>
    <link:loc xlink:href="ste-20200331.xsd#ste_Years51512IntRateMember" xlink:label="loc_ste_Years51512IntRateMember_8CCD880F53D6DEE0ED51518B735E496B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ste_Years51512IntRateMember_8CCD880F53D6DEE0ED51518B735E496B" xlink:to="lab_ste_Years51512IntRateMember_8CCD880F53D6DEE0ED51518B735E496B" xlink:type="arc" />
    <link:label id="lab_ste_TypeofotherreceivableAxis_8F5866AB0150115F81AF518B735EB871_terseLabel_en-US" xlink:label="lab_ste_TypeofotherreceivableAxis_8F5866AB0150115F81AF518B735EB871" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Type of other receivable [Axis]</link:label>
    <link:label id="lab_ste_TypeofotherreceivableAxis_8F5866AB0150115F81AF518B735EB871_label_en-US" xlink:label="lab_ste_TypeofotherreceivableAxis_8F5866AB0150115F81AF518B735EB871" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Type of other receivable [Axis]</link:label>
    <link:label id="lab_ste_TypeofotherreceivableAxis_8F5866AB0150115F81AF518B735EB871_documentation_en-US" xlink:label="lab_ste_TypeofotherreceivableAxis_8F5866AB0150115F81AF518B735EB871" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">type of other receivable [Axis]</link:label>
    <link:loc xlink:href="ste-20200331.xsd#ste_TypeofotherreceivableAxis" xlink:label="loc_ste_TypeofotherreceivableAxis_8F5866AB0150115F81AF518B735EB871" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ste_TypeofotherreceivableAxis_8F5866AB0150115F81AF518B735EB871" xlink:to="lab_ste_TypeofotherreceivableAxis_8F5866AB0150115F81AF518B735EB871" xlink:type="arc" />
    <link:label id="lab_ste_TypeofotherreceivableDomain_0F5450D2AA6863DEF468518B735ED4A5_terseLabel_en-US" xlink:label="lab_ste_TypeofotherreceivableDomain_0F5450D2AA6863DEF468518B735ED4A5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Type of other receivable [Domain]</link:label>
    <link:label id="lab_ste_TypeofotherreceivableDomain_0F5450D2AA6863DEF468518B735ED4A5_label_en-US" xlink:label="lab_ste_TypeofotherreceivableDomain_0F5450D2AA6863DEF468518B735ED4A5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Type of other receivable [Domain]</link:label>
    <link:label id="lab_ste_TypeofotherreceivableDomain_0F5450D2AA6863DEF468518B735ED4A5_documentation_en-US" xlink:label="lab_ste_TypeofotherreceivableDomain_0F5450D2AA6863DEF468518B735ED4A5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">[Domain] for type of other receivable [Axis]</link:label>
    <link:loc xlink:href="ste-20200331.xsd#ste_TypeofotherreceivableDomain" xlink:label="loc_ste_TypeofotherreceivableDomain_0F5450D2AA6863DEF468518B735ED4A5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ste_TypeofotherreceivableDomain_0F5450D2AA6863DEF468518B735ED4A5" xlink:to="lab_ste_TypeofotherreceivableDomain_0F5450D2AA6863DEF468518B735ED4A5" xlink:type="arc" />
    <link:label id="lab_ste_DutchLinenLoanDomain_30C865876149C7B306AB518B735EDE6C_terseLabel_en-US" xlink:label="lab_ste_DutchLinenLoanDomain_30C865876149C7B306AB518B735EDE6C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Dutch Linen Loan [Domain]</link:label>
    <link:label id="lab_ste_DutchLinenLoanDomain_30C865876149C7B306AB518B735EDE6C_label_en-US" xlink:label="lab_ste_DutchLinenLoanDomain_30C865876149C7B306AB518B735EDE6C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Dutch Linen Loan [Domain]</link:label>
    <link:label id="lab_ste_DutchLinenLoanDomain_30C865876149C7B306AB518B735EDE6C_documentation_en-US" xlink:label="lab_ste_DutchLinenLoanDomain_30C865876149C7B306AB518B735EDE6C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Dutch Linen Loan [Domain]</link:label>
    <link:loc xlink:href="ste-20200331.xsd#ste_DutchLinenLoanDomain" xlink:label="loc_ste_DutchLinenLoanDomain_30C865876149C7B306AB518B735EDE6C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ste_DutchLinenLoanDomain_30C865876149C7B306AB518B735EDE6C" xlink:to="lab_ste_DutchLinenLoanDomain_30C865876149C7B306AB518B735EDE6C" xlink:type="arc" />
    <link:label id="lab_ste_EquityInvesteeLoanDomain_0E5C3915CD11F75C68C1518B735ED0D8_terseLabel_en-US" xlink:label="lab_ste_EquityInvesteeLoanDomain_0E5C3915CD11F75C68C1518B735ED0D8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity Investee Loan [Domain]</link:label>
    <link:label id="lab_ste_EquityInvesteeLoanDomain_0E5C3915CD11F75C68C1518B735ED0D8_label_en-US" xlink:label="lab_ste_EquityInvesteeLoanDomain_0E5C3915CD11F75C68C1518B735ED0D8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity Investee Loan [Domain]</link:label>
    <link:label id="lab_ste_EquityInvesteeLoanDomain_0E5C3915CD11F75C68C1518B735ED0D8_documentation_en-US" xlink:label="lab_ste_EquityInvesteeLoanDomain_0E5C3915CD11F75C68C1518B735ED0D8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Equity Investee Loan [Domain]</link:label>
    <link:loc xlink:href="ste-20200331.xsd#ste_EquityInvesteeLoanDomain" xlink:label="loc_ste_EquityInvesteeLoanDomain_0E5C3915CD11F75C68C1518B735ED0D8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ste_EquityInvesteeLoanDomain_0E5C3915CD11F75C68C1518B735ED0D8" xlink:to="lab_ste_EquityInvesteeLoanDomain_0E5C3915CD11F75C68C1518B735ED0D8" xlink:type="arc" />
    <link:label id="lab_ste_LoanReceivableInterestRateYears515Axis_0AD1C25BBCE3A98881D7518B735EB0CA_terseLabel_en-US" xlink:label="lab_ste_LoanReceivableInterestRateYears515Axis_0AD1C25BBCE3A98881D7518B735EB0CA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loan Receivable Interest Rate, Years 5-15 [Axis]</link:label>
    <link:label id="lab_ste_LoanReceivableInterestRateYears515Axis_0AD1C25BBCE3A98881D7518B735EB0CA_label_en-US" xlink:label="lab_ste_LoanReceivableInterestRateYears515Axis_0AD1C25BBCE3A98881D7518B735EB0CA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loan Receivable Interest Rate, Years 5-15 [Axis]</link:label>
    <link:label id="lab_ste_LoanReceivableInterestRateYears515Axis_0AD1C25BBCE3A98881D7518B735EB0CA_documentation_en-US" xlink:label="lab_ste_LoanReceivableInterestRateYears515Axis_0AD1C25BBCE3A98881D7518B735EB0CA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Loan Receivable Interest Rate, Years 5-15 [Axis] - Interest rate on loans receivable for years 5-15</link:label>
    <link:loc xlink:href="ste-20200331.xsd#ste_LoanReceivableInterestRateYears515Axis" xlink:label="loc_ste_LoanReceivableInterestRateYears515Axis_0AD1C25BBCE3A98881D7518B735EB0CA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ste_LoanReceivableInterestRateYears515Axis_0AD1C25BBCE3A98881D7518B735EB0CA" xlink:to="lab_ste_LoanReceivableInterestRateYears515Axis_0AD1C25BBCE3A98881D7518B735EB0CA" xlink:type="arc" />
    <link:label id="lab_ste_LoanReceivableInterestRateYears515Domain_0961DB33B1445E9C941C518B73626DDB_terseLabel_en-US" xlink:label="lab_ste_LoanReceivableInterestRateYears515Domain_0961DB33B1445E9C941C518B73626DDB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loan Receivable Interest Rate, Years 5-15 [Domain]</link:label>
    <link:label id="lab_ste_LoanReceivableInterestRateYears515Domain_0961DB33B1445E9C941C518B73626DDB_label_en-US" xlink:label="lab_ste_LoanReceivableInterestRateYears515Domain_0961DB33B1445E9C941C518B73626DDB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loan Receivable Interest Rate, Years 5-15 [Domain]</link:label>
    <link:label id="lab_ste_LoanReceivableInterestRateYears515Domain_0961DB33B1445E9C941C518B73626DDB_documentation_en-US" xlink:label="lab_ste_LoanReceivableInterestRateYears515Domain_0961DB33B1445E9C941C518B73626DDB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">[Domain] for Loan Receivable Interest Rate, Years 5-15 [Axis] - Interest rate on loans receivable for years 5-15</link:label>
    <link:loc xlink:href="ste-20200331.xsd#ste_LoanReceivableInterestRateYears515Domain" xlink:label="loc_ste_LoanReceivableInterestRateYears515Domain_0961DB33B1445E9C941C518B73626DDB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ste_LoanReceivableInterestRateYears515Domain_0961DB33B1445E9C941C518B73626DDB" xlink:to="lab_ste_LoanReceivableInterestRateYears515Domain_0961DB33B1445E9C941C518B73626DDB" xlink:type="arc" />
    <link:label id="lab_ste_LoanReceivableInterestRateyears14Axis_371BD3539A3673D434D3518B73637BDC_terseLabel_en-US" xlink:label="lab_ste_LoanReceivableInterestRateyears14Axis_371BD3539A3673D434D3518B73637BDC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loan Receivable Interest Rate, years 1-4 [Axis]</link:label>
    <link:label id="lab_ste_LoanReceivableInterestRateyears14Axis_371BD3539A3673D434D3518B73637BDC_label_en-US" xlink:label="lab_ste_LoanReceivableInterestRateyears14Axis_371BD3539A3673D434D3518B73637BDC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loan Receivable Interest Rate, years 1-4 [Axis]</link:label>
    <link:label id="lab_ste_LoanReceivableInterestRateyears14Axis_371BD3539A3673D434D3518B73637BDC_documentation_en-US" xlink:label="lab_ste_LoanReceivableInterestRateyears14Axis_371BD3539A3673D434D3518B73637BDC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Loan Receivable Interest Rate, years 1-4 [Axis] - Interest rate on yars 1-4</link:label>
    <link:loc xlink:href="ste-20200331.xsd#ste_LoanReceivableInterestRateyears14Axis" xlink:label="loc_ste_LoanReceivableInterestRateyears14Axis_371BD3539A3673D434D3518B73637BDC" xlink:type="locator" />
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    <link:label id="lab_ste_LoanReceivableInterestRateyears14Domain_3DA357B86949CFA3226D518B7363DCE2_terseLabel_en-US" xlink:label="lab_ste_LoanReceivableInterestRateyears14Domain_3DA357B86949CFA3226D518B7363DCE2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loan Receivable Interest Rate, years 1-4 [Domain]</link:label>
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    <link:label id="lab_ste_A10YearMaturityMember_E917179E87B3F834F6E55151B26705A3_label_en-US" xlink:label="lab_ste_A10YearMaturityMember_E917179E87B3F834F6E55151B26705A3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">10 year maturity [Member]</link:label>
    <link:label id="lab_ste_A10YearMaturityMember_E917179E87B3F834F6E55151B26705A3_documentation_en-US" xlink:label="lab_ste_A10YearMaturityMember_E917179E87B3F834F6E55151B26705A3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">10 year maturity [Member]</link:label>
    <link:loc xlink:href="ste-20200331.xsd#ste_A10YearMaturityMember" xlink:label="loc_ste_A10YearMaturityMember_E917179E87B3F834F6E55151B26705A3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ste_A10YearMaturityMember_E917179E87B3F834F6E55151B26705A3" xlink:to="lab_ste_A10YearMaturityMember_E917179E87B3F834F6E55151B26705A3" xlink:type="arc" />
    <link:label id="lab_ste_A12YearMaturityMember_F3DC429A877C85D490625151B2670DAD_terseLabel_en-US" xlink:label="lab_ste_A12YearMaturityMember_F3DC429A877C85D490625151B2670DAD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">12 year maturity</link:label>
    <link:label id="lab_ste_A12YearMaturityMember_F3DC429A877C85D490625151B2670DAD_label_en-US" xlink:label="lab_ste_A12YearMaturityMember_F3DC429A877C85D490625151B2670DAD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">12 year maturity [Member]</link:label>
    <link:label id="lab_ste_A12YearMaturityMember_F3DC429A877C85D490625151B2670DAD_documentation_en-US" xlink:label="lab_ste_A12YearMaturityMember_F3DC429A877C85D490625151B2670DAD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">12 year maturity [Member]</link:label>
    <link:loc xlink:href="ste-20200331.xsd#ste_A12YearMaturityMember" xlink:label="loc_ste_A12YearMaturityMember_F3DC429A877C85D490625151B2670DAD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ste_A12YearMaturityMember_F3DC429A877C85D490625151B2670DAD" xlink:to="lab_ste_A12YearMaturityMember_F3DC429A877C85D490625151B2670DAD" xlink:type="arc" />
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    <link:label id="lab_ste_A15YearMaturityMemberDomain_CDB0069F90792A835B6F5151B26762D3_label_en-US" xlink:label="lab_ste_A15YearMaturityMemberDomain_CDB0069F90792A835B6F5151B26762D3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">15 year maturity [Member] [Domain]</link:label>
    <link:label id="lab_ste_A15YearMaturityMemberDomain_CDB0069F90792A835B6F5151B26762D3_documentation_en-US" xlink:label="lab_ste_A15YearMaturityMemberDomain_CDB0069F90792A835B6F5151B26762D3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">15 year maturity [Member] [Domain]</link:label>
    <link:loc xlink:href="ste-20200331.xsd#ste_A15YearMaturityMemberDomain" xlink:label="loc_ste_A15YearMaturityMemberDomain_CDB0069F90792A835B6F5151B26762D3" xlink:type="locator" />
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    <link:label id="lab_ste_August2008NotesMemberMember_379BF41CFCD78CCA88C45151B2675992_label_en-US" xlink:label="lab_ste_August2008NotesMemberMember_379BF41CFCD78CCA88C45151B2675992" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">August 2008 Notes [Member] [Member]</link:label>
    <link:label id="lab_ste_August2008NotesMemberMember_379BF41CFCD78CCA88C45151B2675992_documentation_en-US" xlink:label="lab_ste_August2008NotesMemberMember_379BF41CFCD78CCA88C45151B2675992" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">August 2008 Notes [Member] [Member]</link:label>
    <link:loc xlink:href="ste-20200331.xsd#ste_August2008NotesMemberMember" xlink:label="loc_ste_August2008NotesMemberMember_379BF41CFCD78CCA88C45151B2675992" xlink:type="locator" />
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    <link:label id="lab_ste_A14Year10MonthsMaturityMemberDomain_2A05EAA6EBE104ACB2125151B267C83F_terseLabel_en-US" xlink:label="lab_ste_A14Year10MonthsMaturityMemberDomain_2A05EAA6EBE104ACB2125151B267C83F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">14 year 10 months maturity</link:label>
    <link:label id="lab_ste_A14Year10MonthsMaturityMemberDomain_2A05EAA6EBE104ACB2125151B267C83F_label_en-US" xlink:label="lab_ste_A14Year10MonthsMaturityMemberDomain_2A05EAA6EBE104ACB2125151B267C83F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">14 year 10 months maturity [Member] [Domain]</link:label>
    <link:label id="lab_ste_A14Year10MonthsMaturityMemberDomain_2A05EAA6EBE104ACB2125151B267C83F_documentation_en-US" xlink:label="lab_ste_A14Year10MonthsMaturityMemberDomain_2A05EAA6EBE104ACB2125151B267C83F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">14 year 10 months maturity [Member] [Domain]</link:label>
    <link:loc xlink:href="ste-20200331.xsd#ste_A14Year10MonthsMaturityMemberDomain" xlink:label="loc_ste_A14Year10MonthsMaturityMemberDomain_2A05EAA6EBE104ACB2125151B267C83F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ste_A14Year10MonthsMaturityMemberDomain_2A05EAA6EBE104ACB2125151B267C83F" xlink:to="lab_ste_A14Year10MonthsMaturityMemberDomain_2A05EAA6EBE104ACB2125151B267C83F" xlink:type="arc" />
    <link:label id="lab_ste_A11Year10MonthsDomainDomain_810822E92A284FC49E005151B267B20E_terseLabel_en-US" xlink:label="lab_ste_A11Year10MonthsDomainDomain_810822E92A284FC49E005151B267B20E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">10 year 11 months</link:label>
    <link:label id="lab_ste_A11Year10MonthsDomainDomain_810822E92A284FC49E005151B267B20E_label_en-US" xlink:label="lab_ste_A11Year10MonthsDomainDomain_810822E92A284FC49E005151B267B20E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">11 year 10 months [Domain] [Domain]</link:label>
    <link:label id="lab_ste_A11Year10MonthsDomainDomain_810822E92A284FC49E005151B267B20E_documentation_en-US" xlink:label="lab_ste_A11Year10MonthsDomainDomain_810822E92A284FC49E005151B267B20E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">11 year 10 months [Domain] [Domain]</link:label>
    <link:loc xlink:href="ste-20200331.xsd#ste_A11Year10MonthsDomainDomain" xlink:label="loc_ste_A11Year10MonthsDomainDomain_810822E92A284FC49E005151B267B20E" xlink:type="locator" />
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    <link:label id="lab_ste_CreditAgreementtermloansprincipalpaymentminimumMember_C9BACDE24D688000EF365151B2678B20_terseLabel_en-US" xlink:label="lab_ste_CreditAgreementtermloansprincipalpaymentminimumMember_C9BACDE24D688000EF365151B2678B20" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Credit Agreement- term loans principal payment minimum [Member]</link:label>
    <link:label id="lab_ste_CreditAgreementtermloansprincipalpaymentminimumMember_C9BACDE24D688000EF365151B2678B20_label_en-US" xlink:label="lab_ste_CreditAgreementtermloansprincipalpaymentminimumMember_C9BACDE24D688000EF365151B2678B20" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Credit Agreement- term loans principal payment minimum [Member]</link:label>
    <link:label id="lab_ste_CreditAgreementtermloansprincipalpaymentminimumMember_C9BACDE24D688000EF365151B2678B20_documentation_en-US" xlink:label="lab_ste_CreditAgreementtermloansprincipalpaymentminimumMember_C9BACDE24D688000EF365151B2678B20" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Credit Agreement- term loans principal payment minimum [Member]</link:label>
    <link:loc xlink:href="ste-20200331.xsd#ste_CreditAgreementtermloansprincipalpaymentminimumMember" xlink:label="loc_ste_CreditAgreementtermloansprincipalpaymentminimumMember_C9BACDE24D688000EF365151B2678B20" xlink:type="locator" />
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    <link:label id="lab_ste_CreditAgreementtermloanprincipalpaymentmaximumMember_6024E893B4EE9FA810CD5151B2671BDA_terseLabel_en-US" xlink:label="lab_ste_CreditAgreementtermloanprincipalpaymentmaximumMember_6024E893B4EE9FA810CD5151B2671BDA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Credit Agreement- term loan principal payment maximum [Member]</link:label>
    <link:label id="lab_ste_CreditAgreementtermloanprincipalpaymentmaximumMember_6024E893B4EE9FA810CD5151B2671BDA_label_en-US" xlink:label="lab_ste_CreditAgreementtermloanprincipalpaymentmaximumMember_6024E893B4EE9FA810CD5151B2671BDA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Credit Agreement- term loan principal payment maximum [Member]</link:label>
    <link:label id="lab_ste_CreditAgreementtermloanprincipalpaymentmaximumMember_6024E893B4EE9FA810CD5151B2671BDA_documentation_en-US" xlink:label="lab_ste_CreditAgreementtermloanprincipalpaymentmaximumMember_6024E893B4EE9FA810CD5151B2671BDA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Credit Agreement- term loan principal payment maximum [Member]</link:label>
    <link:loc xlink:href="ste-20200331.xsd#ste_CreditAgreementtermloanprincipalpaymentmaximumMember" xlink:label="loc_ste_CreditAgreementtermloanprincipalpaymentmaximumMember_6024E893B4EE9FA810CD5151B2671BDA" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DebtInstrumentLineItems_3260CD35BBD142046B6B5151B267A326_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems_3260CD35BBD142046B6B5151B267A326" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="loc_us-gaap_DebtInstrumentLineItems_3260CD35BBD142046B6B5151B267A326" xlink:type="locator" />
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    <link:label id="lab_us-gaap_SeniorNotes_E92D2AC4B0F6803D07325151B267DD2B_terseLabel_en-US" xlink:label="lab_us-gaap_SeniorNotes_E92D2AC4B0F6803D07325151B267DD2B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Senior Notes</link:label>
    <link:label id="lab_us-gaap_SeniorNotes_E92D2AC4B0F6803D07325151B267DD2B_label_en-US" xlink:label="lab_us-gaap_SeniorNotes_E92D2AC4B0F6803D07325151B267DD2B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Senior Notes</link:label>
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    <link:label id="lab_us-gaap_LongTermLineOfCredit_CE2D204238003BF7D8CC5151B2678BD4_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermLineOfCredit_CE2D204238003BF7D8CC5151B2678BD4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term Line of Credit, Noncurrent</link:label>
    <link:label id="lab_us-gaap_LongTermLineOfCredit_CE2D204238003BF7D8CC5151B2678BD4_label_en-US" xlink:label="lab_us-gaap_LongTermLineOfCredit_CE2D204238003BF7D8CC5151B2678BD4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Line of Credit, Noncurrent</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextRollingTwelveMonths" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextRollingTwelveMonths_F5AE6634CA393ECAA5085151B2674AE8" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_104B653005A4FE0665E65151B267D242_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_104B653005A4FE0665E65151B267D242" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Maximum Borrowing Capacity</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_104B653005A4FE0665E65151B267D242" xlink:type="locator" />
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_9A7B43CA66FB0348C4FA477F7326C078" xlink:to="lab_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_9A7B43CA66FB0348C4FA477F7326C078" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_A4ED47C69F34AECFE64F477F73277232_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_A4ED47C69F34AECFE64F477F73277232" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Changes in operating assets and liabilities:</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_A4ED47C69F34AECFE64F477F73277232_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_A4ED47C69F34AECFE64F477F73277232" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Operating Capital [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_A4ED47C69F34AECFE64F477F73277232" xlink:type="locator" />
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    <link:label id="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_00AD3F84BEA021A12E81477F732729AA_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_00AD3F84BEA021A12E81477F732729AA" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Accounts receivable, net</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_00AD3F84BEA021A12E81477F732729AA" xlink:to="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_00AD3F84BEA021A12E81477F732729AA" xlink:type="arc" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInInventories" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_74B58A5A69EC3D6DB7E8477F73274274" xlink:type="locator" />
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    <link:label id="lab_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_ADE7002781FC1EF87142477F7327A76D_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_ADE7002781FC1EF87142477F7327A76D" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Other current assets</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_ADE7002781FC1EF87142477F7327A76D" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_C88BB3B5EF4F6C7AFB03477F7327DABC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInAccountsPayable_C88BB3B5EF4F6C7AFB03477F7327DABC" xlink:to="lab_us-gaap_IncreaseDecreaseInAccountsPayable_C88BB3B5EF4F6C7AFB03477F7327DABC" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInAccruedLiabilities_FF5921267C2DEEA0DE45477F7328FC6B_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccruedLiabilities_FF5921267C2DEEA0DE45477F7328FC6B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accruals and other, net</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInAccruedLiabilities_FF5921267C2DEEA0DE45477F7328FC6B_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccruedLiabilities_FF5921267C2DEEA0DE45477F7328FC6B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Accrued Liabilities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedLiabilities_FF5921267C2DEEA0DE45477F7328FC6B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInAccruedLiabilities_FF5921267C2DEEA0DE45477F7328FC6B" xlink:to="lab_us-gaap_IncreaseDecreaseInAccruedLiabilities_FF5921267C2DEEA0DE45477F7328FC6B" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_E86DEDAC54EE655A5361477F732893B8_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_E86DEDAC54EE655A5361477F732893B8" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash provided by operating activities</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_E86DEDAC54EE655A5361477F732893B8_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_E86DEDAC54EE655A5361477F732893B8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Operating Activities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_E86DEDAC54EE655A5361477F732893B8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_E86DEDAC54EE655A5361477F732893B8" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_E86DEDAC54EE655A5361477F732893B8" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_B81AD0FF06B1EF48289A477F7328D4D2_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_B81AD0FF06B1EF48289A477F7328D4D2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Investing activities:</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_B81AD0FF06B1EF48289A477F7328D4D2_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_B81AD0FF06B1EF48289A477F7328D4D2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Investing Activities [Abstract]</link:label>
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    <link:label id="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_BE88BA08038211668AE8477F7328485D_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_BE88BA08038211668AE8477F7328485D" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Purchases of property, plant, equipment, and intangibles, net</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_BE88BA08038211668AE8477F7328485D" xlink:type="locator" />
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    <link:label id="lab_us-gaap_PaymentsToAcquireInvestments_9ECA44250B86326BE8C5477F7329DA36_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireInvestments_9ECA44250B86326BE8C5477F7329DA36" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments to Acquire Investments</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToAcquireInvestments" xlink:label="loc_us-gaap_PaymentsToAcquireInvestments_9ECA44250B86326BE8C5477F7329DA36" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_A3F45E6A4B14287BD45DCC18159CF6F9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_A3F45E6A4B14287BD45DCC18159CF6F9" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_A3F45E6A4B14287BD45DCC18159CF6F9" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_7126973259B0FE624F13CC18159D0A95_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_7126973259B0FE624F13CC18159D0A95" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted-average assumptions used for options granted:</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_7126973259B0FE624F13CC18159D0A95_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_7126973259B0FE624F13CC18159D0A95" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_7126973259B0FE624F13CC18159D0A95" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_7126973259B0FE624F13CC18159D0A95" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_2B8100A702ABCFBC3C3CCC18159DEFB9_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_2B8100A702ABCFBC3C3CCC18159DEFB9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Risk-free interest rate</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_2B8100A702ABCFBC3C3CCC18159DEFB9" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_2B8100A702ABCFBC3C3CCC18159DEFB9" xlink:type="arc" />
    <link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_9D40CBFCB745796EF835CC18159E5FA0_terseLabel_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_9D40CBFCB745796EF835CC18159E5FA0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expected life of options</link:label>
    <link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_9D40CBFCB745796EF835CC18159E5FA0_label_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_9D40CBFCB745796EF835CC18159E5FA0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_9D40CBFCB745796EF835CC18159E5FA0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_9D40CBFCB745796EF835CC18159E5FA0" xlink:to="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_9D40CBFCB745796EF835CC18159E5FA0" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_7A590445C17E1179C072CC18159EF579_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_7A590445C17E1179C072CC18159EF579" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Exptected dividend yield of stock</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_7A590445C17E1179C072CC18159EF579_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_7A590445C17E1179C072CC18159EF579" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_7A590445C17E1179C072CC18159EF579" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_7A590445C17E1179C072CC18159EF579" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_7A590445C17E1179C072CC18159EF579" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate_AC125E3D74ADB88D1E3ECC18159ED069_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate_AC125E3D74ADB88D1E3ECC18159ED069" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expected volatility of stock</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate_AC125E3D74ADB88D1E3ECC18159ED069_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate_AC125E3D74ADB88D1E3ECC18159ED069" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Weighted Average Volatility Rate</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate_AC125E3D74ADB88D1E3ECC18159ED069" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate_AC125E3D74ADB88D1E3ECC18159ED069" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate_AC125E3D74ADB88D1E3ECC18159ED069" xlink:type="arc" />
    <link:label id="lab_ste_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsForfeitureRate_673500C3586B0A6A428ACC18159E34EA_terseLabel_en-US" xlink:label="lab_ste_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsForfeitureRate_673500C3586B0A6A428ACC18159E34EA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated forfeiture rate</link:label>
    <link:label id="lab_ste_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsForfeitureRate_673500C3586B0A6A428ACC18159E34EA_label_en-US" xlink:label="lab_ste_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsForfeitureRate_673500C3586B0A6A428ACC18159E34EA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Forfeiture Rate</link:label>
    <link:label id="lab_ste_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsForfeitureRate_673500C3586B0A6A428ACC18159E34EA_documentation_en-US" xlink:label="lab_ste_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsForfeitureRate_673500C3586B0A6A428ACC18159E34EA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The estimated forfeiture rate is based upon historical activity and represents an estimate of the granted options not exptected to vest.</link:label>
    <link:loc xlink:href="ste-20200331.xsd#ste_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsForfeitureRate" xlink:label="loc_ste_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsForfeitureRate_673500C3586B0A6A428ACC18159E34EA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ste_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsForfeitureRate_673500C3586B0A6A428ACC18159E34EA" xlink:to="lab_ste_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsForfeitureRate_673500C3586B0A6A428ACC18159E34EA" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_04BF66B543282A3433A0CC18159F3191_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_04BF66B543282A3433A0CC18159F3191" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of share option activity:</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_04BF66B543282A3433A0CC18159F3191_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_04BF66B543282A3433A0CC18159F3191" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_04BF66B543282A3433A0CC18159F3191" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_04BF66B543282A3433A0CC18159F3191" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_04BF66B543282A3433A0CC18159F3191" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_3BA16C197BA864F3EAF5CC18159F5539_periodStartLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_3BA16C197BA864F3EAF5CC18159F5539" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Number of Options, Outstanding, Beginning of Period</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_3BA16C197BA864F3EAF5CC18159F5539" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_3BA16C197BA864F3EAF5CC18159F5539" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_3BA16C197BA864F3EAF5CC18159F5539" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_C71A1BD702BDE282F398CC18159FBCE0_periodStartLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_C71A1BD702BDE282F398CC18159FBCE0" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Weighted Average Exercise Price, Outstanding, Beginning of Period</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_C71A1BD702BDE282F398CC18159FBCE0_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_C71A1BD702BDE282F398CC18159FBCE0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_C71A1BD702BDE282F398CC18159FBCE0" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_1D6EDFD7D4D10A90D92FCC18159FB69F_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_1D6EDFD7D4D10A90D92FCC18159FB69F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of Options, Granted</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_1D6EDFD7D4D10A90D92FCC18159FB69F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_1D6EDFD7D4D10A90D92FCC18159FB69F" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_1D6EDFD7D4D10A90D92FCC18159FB69F" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_583FCD8561C9A9F654D2CC18159F1360_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_583FCD8561C9A9F654D2CC18159F1360" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted Average Exercise Price, Granted</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_583FCD8561C9A9F654D2CC18159F1360" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_583FCD8561C9A9F654D2CC18159F1360" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_583FCD8561C9A9F654D2CC18159F1360" xlink:type="arc" />
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