Deferred Government Grants (Tables)

6 Months Ended

Jun. 30, 2020

Deferred Government Grants [Abstract]

Schedule of deferred government grants

	December 31,			June 30,
	2019			2020
Total government grants	$	4,260,833		$	4,129,272
Less: Current portion		(142,026	)		(139,974	)
Non-current portion	$	4,118,807		$	3,989,298