Pledged deposits (Tables)

6 Months Ended

Jun. 30, 2018

SCHEDULE OF PLEDGED DEPOSITS [Table Text Block]

		December 31,		June 30,
		2017		2018
Pledged deposits with bank for:
Bills payable	$	123,116	$	4,155,461
Letters of credit		7,685,213		7,554,468
Others*		1,295,849		1,273,803
	$	9,104,178	$	12,983,732