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Summary of Significant Accounting Policies (Details 1)
12 Months Ended
Dec. 31, 2019
Leasehold Improvements [Member]  
Property, Plant and Equipment [Line Items]  
Property and equipment estimated useful lives Shorter of the useful lives or the lease term
Machinery and Equipment [Member] | Minimum [Member]  
Property, Plant and Equipment [Line Items]  
Property and equipment estimated useful lives, term 2 years
Machinery and Equipment [Member] | Maximum [Member]  
Property, Plant and Equipment [Line Items]  
Property and equipment estimated useful lives, term 3 years
Motor vehicles [Member]  
Property, Plant and Equipment [Line Items]  
Property and equipment estimated useful lives, term 3 years
Furniture and office equipment [Member] | Minimum [Member]  
Property, Plant and Equipment [Line Items]  
Property and equipment estimated useful lives, term 3 years
Furniture and office equipment [Member] | Maximum [Member]  
Property, Plant and Equipment [Line Items]  
Property and equipment estimated useful lives, term 5 years