Prepayments, Deposits and Other Assets, Net (Tables)

12 Months Ended

Dec. 31, 2019

Prepayments Deposits And Other Assets Net [Abstract]

Schedule of prepayments, deposits and other assets, net

	As of December 31,
	2019			2018
Advances to suppliers	$	31,449		$	138,464
Security deposits *		755,886			857,676
Advances to employees		91,108			248,191
Prepaid expense		377,501			222,862
Deferred offering cost		-			400,640
Others		158,554			109,721
		1,414,498			1,977,554
Less: Long term portion		(759,397	)		(865,498	)
Allowance for doubtful accounts		(31,139	)		(14,047	)
Prepayments, deposits and other assets – current portion	$	623,962		$	1,098,009

* Security deposits represent contract fulfillment deposits required by customer for specific projects, rent deposits and etc.

Schedule of allowance for doubtful accounts

	As of December 31,
	2019			2018			2017
Beginning balance	$	14,047		$	19,422		$	10,648
(Recovery) provision for doubtful accounts		17,400			(4,510	)		7,760
Foreign currency translation adjustments		(308	)		(865	)		1,014
Ending balance	$	31,139		$	14,047		$	19,422