Trade Accounts and Bills Payable (Tables)

3 Months Ended

Mar. 31, 2019

Trade Accounts and Bills Payable [Abstract]

Schedule of trade accounts and bills payable

	December 31,		March 31,
	2018		2019
Trade accounts payable	$	23,134,269	$	21,709,607
Bills payable
– Bank acceptance bills (Note 1)		28,911,556		23,563,822
– Commercial acceptance bills		449,238		-
	$	52,495,063	$	45,273,429