Concentrations (Tables)

3 Months Ended

Mar. 31, 2017

Concentrations [Abstract]

Summary of concentration of revenue from customers

	Three Months Ended March 31,
Supplier	2017			2016
A		18	%		*
B		11	%		*
C		*			19	%
D		*			17	%
E		*			13	%
F		*			12	%
G		*			10	%

* Less than 10%

Summary of concentrations of purchase from suppliers

	Three Months Ended March 31,
Supplier	2017			2016
A		31	%		*
B		12	%		*
C		12	%		*
D		*			23	%
E		*			18	%

* Less than 10%.