Trade Accounts and Bills Payable (Tables)

3 Months Ended

Mar. 31, 2020

Trade Accounts and Bills Payable [Abstract]

Schedule of trade accounts and bills payable

	December 31,		March 31,
	2019		2020
Trade accounts payable	$	11,157,014	$	10,801,796
Bills payable
– Bank acceptance bills		3,915,094		3,883,077
– Commercial acceptance bills		-		-
	$	15,072,108	$	14,684,873