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Concentrations (Details 1) - Purchase [Member]
6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Concentration of purchase from suppliers    
Concentration risk supplier, Percentage 10.00% 10.00%
Supplier A [Member]    
Concentration of purchase from suppliers    
Concentration risk supplier, Percentage 23.00% [1]
Supplier B [Member]    
Concentration of purchase from suppliers    
Concentration risk supplier, Percentage 15.00%
Supplier C [Member]    
Concentration of purchase from suppliers    
Concentration risk supplier, Percentage 11.00%
Suppliers D [Member]    
Concentration of purchase from suppliers    
Concentration risk supplier, Percentage 17.00%
Suppliers E [Member]    
Concentration of purchase from suppliers    
Concentration risk supplier, Percentage 14.00%
[1] Less than 10%