Construction in Progress (Tables)

3 Months Ended

Mar. 31, 2018

Schedule of Construction in Progress [Table Text Block]

		December 31,		March 31,
		2017		2018
Construction in progress	$	24,288,889	$	25,950,961
Prepayment for acquisition of property, plant and equipment		740,401		3,889,377
Carrying amount	$	25,029,290	$	29,840,338