Organization and Principal Activities |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2017 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Organization Consolidation And Presentation Of Financial Statements [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Organization and Principal Activities |
Zai Lab Limited (the “Company”) was incorporated on March 28, 2013 in the Cayman Islands as an exempted company with limited liability under the Companies Law of the Cayman Islands. The Company and its subsidiaries (collectively referred to as the “Group”) are principally engaged in discovering or licensing, developing and commercializing proprietary therapeutics that address areas of large unmet medical needs in the China market, including in the fields of oncology, autoimmune and infectious disease therapies. As of December 31, 2017, the Group's significant operating subsidiaries are as follows:
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