Accounts receivable, net

6 Months Ended

Jun. 30, 2018

Accounts receivable, net [Abstract]

Accounts Receivable [Text Block]

4. Accounts receivable, net

	June 30,		December 31,
	2018		2017
	(Unaudited)
	$		$
Accounts receivable		64,623,597		61,431,785
Less: allowance for doubtful accounts		3,183,022		3,178,786
		61,440,575		58,252,999