Property, plant and equipment, net (Tables)

12 Months Ended

Dec. 31, 2018

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

	December 31,		December 31,
	2018		2017
	$		$
Cost
Construction in progress		6,991,889		1,330,643
Furniture, fixtures and office equipment		7,221,527		5,794,983
Leasehold improvement		7,090,162		7,080,409
Machinery and equipment		40,316,428		33,176,416
Motor vehicles		1,508,398		1,498,605
Building		19,166,951		20,169,197
		82,295,355		69,050,253
Less: accumulated depreciation		25,772,178		22,529,477
		56,523,177		46,520,776