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Summary of Significant Accounting Policies and Practices (Details)
12 Months Ended
Dec. 31, 2018
Buildings [Member] | Maximum [Member]  
Estimated useful lives of the assets 35 years
Buildings [Member] | Minimum [Member]  
Estimated useful lives of the assets 5 years
Machinery and equipment [Member] | Maximum [Member]  
Estimated useful lives of the assets 15 years
Machinery and equipment [Member] | Minimum [Member]  
Estimated useful lives of the assets 1 year
Office equipment [Member] | Maximum [Member]  
Estimated useful lives of the assets 5 years
Office equipment [Member] | Minimum [Member]  
Estimated useful lives of the assets 1 year
Motor vehicles [Member] | Maximum [Member]  
Estimated useful lives of the assets 10 years
Motor vehicles [Member] | Minimum [Member]  
Estimated useful lives of the assets 5 years