Concentrations (Tables)

6 Months Ended

Jun. 30, 2018

Concentrations [Abstract]

Summary of concentrations of purchase from suppliers

	Six Months Ended June 30,
Supplier	2018			2017
A		-			23	%
B		14	%		15	%
C		*			11	%
D		21	%		*
E		15	%		*
F		11	%		*

* Less than 10%.