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Summary of Significant Principal Accounting Policies (Summary of Useful Lives) (Details)
12 Months Ended
Dec. 31, 2016
Electronic devices [Member]  
Property, Plant and Equipment [Line Items]  
Useful years 3 years
Electronic devices [Member] | Minimum [Member]  
Property, Plant and Equipment [Line Items]  
Residual rate 0.00%
Electronic devices [Member] | Maximum [Member]  
Property, Plant and Equipment [Line Items]  
Residual rate 5.00%
Vehicles [Member]  
Property, Plant and Equipment [Line Items]  
Useful years 5 years
Residual rate 5.00%
Furniture and office equipment [Member]  
Property, Plant and Equipment [Line Items]  
Useful years 5 years
Residual rate 5.00%
Leasehold improvement [Member]  
Property, Plant and Equipment [Line Items]  
Residual rate 0.00%
Machinery [Member]  
Property, Plant and Equipment [Line Items]  
Useful years 10 years
Residual rate 5.00%