Trade Accounts and Bills Payable (Tables)

6 Months Ended

Jun. 30, 2019

Trade Accounts and Bills Payable [Abstract]

Schedule of trade accounts and bills payable

	December 31,		June 30,
	2018		2019
Trade accounts payable	$	23,134,269	$	19,230,832
Bills payable
-      Bank acceptance bills (Note 12)		28,911,556		22,824,075
-      Commercial acceptance bills		449,238		-
	$	52,495,063	$	42,054,907