Payables to former subsidiaries (Tables)

12 Months Ended

Dec. 31, 2017

Schedule of Trade Payable To a Former Subsidiary [Table Text Block]

		September 30,		December 31,		December 31,
		2016		2016		2017
BAK Tianjin	$	56,188	$	194,744	$	282,682
BAK Shenzhen		4,326,046		2,294,085		22,020,039
	$	4,382,234	$	2,488,859	$	22,302,721