Property, Plant and Equipment (Details 1)
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9 Months Ended |
Sep. 30, 2020 |
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| Minimum [Member] | Permit of land use [Member] |
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| Property, Plant and Equipment [Line Items] |
|
| Estimated useful lives |
40 years
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| Minimum [Member] | Building [Member] |
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| Property, Plant and Equipment [Line Items] |
|
| Estimated useful lives |
20 years
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| Minimum [Member] | Plant, machinery and equipment [Member] |
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| Property, Plant and Equipment [Line Items] |
|
| Estimated useful lives |
5 years
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| Minimum [Member] | Motor vehicle [Member] |
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| Property, Plant and Equipment [Line Items] |
|
| Estimated useful lives |
5 years
|
| Minimum [Member] | Office equipment [Member] |
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| Property, Plant and Equipment [Line Items] |
|
| Estimated useful lives |
3 years
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| Maximum [Member] | Permit of land use [Member] |
|
| Property, Plant and Equipment [Line Items] |
|
| Estimated useful lives |
70 years
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| Maximum [Member] | Building [Member] |
|
| Property, Plant and Equipment [Line Items] |
|
| Estimated useful lives |
49 years
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| Maximum [Member] | Plant, machinery and equipment [Member] |
|
| Property, Plant and Equipment [Line Items] |
|
| Estimated useful lives |
10 years
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| Maximum [Member] | Motor vehicle [Member] |
|
| Property, Plant and Equipment [Line Items] |
|
| Estimated useful lives |
10 years
|
| Maximum [Member] | Office equipment [Member] |
|
| Property, Plant and Equipment [Line Items] |
|
| Estimated useful lives |
5 years
|