Prepayments, Deposits and Other Assets, Net (Tables)

12 Months Ended

Dec. 31, 2022

Prepayments, Deposits and Other Assets, Net [Abstract]

Schedule of prepayments, deposits and other assets, net

	As of December 31,
	2022			2021
Security deposits (1)	$	216,446		$	381,813
Advances to suppliers		564,810			1,483,084
Advances to employees		141,249			317,725
Prepaid expense		976,788			360,074
Others		139,976			188,216
		2,039,269			2,730,912
Less: Long term portion		(226,544	)		(381,656	)
Allowance for doubtful accounts		(364,973	)		(313,844	)
Prepayments, deposits and other assets – current portion	$	1,447,752		$	2,035,412

(1) Security deposits mainly represent contract fulfillment deposits required by customer for specific projects, rent deposits and etc.

Schedule of allowance for doubtful accounts

	As of December 31,
	2022			2021			2020
Beginning balance	$	313,844		$	306,513		$	31,139
Provision for doubtful accounts		75,000			88,846			258,280
Written-off		-			(88,846	)		-
Foreign currency translation adjustments		(23,871	)		7,331			17,094
Ending balance	$	364,973		$	313,844		$	306,513