Trade and Bills Receivable, net (Tables)

12 Months Ended

Dec. 31, 2021

Trade And Bills Receivable Net [Abstract]

Schedule of trade and bills receivable

	December 31,			December 31,
	2021			2022
Trade receivable	$	48,707,457		$	23,422,733
Less: Allowance for doubtful accounts		(4,618,269	)		(2,274,513	)
		44,089,188			21,148,220
Bills receivable		5,817,941			6,265,355
	$	49,907,129		$	27,413,575

Schedule of analysis of the allowance for doubtful accounts

	December 31,			December 31,
	2021			2022
Balance at beginning of year	$	5,266,828		$	4,618,269
Provision for the year		225,875			1,018,092
Reversal - recoveries by cash		(1,006,264	)		(186,960	)
Charged to consolidated statements of operations and comprehensive income (loss)	$	(780,389	)	$	831,132
Written off		-			(2,858,177	)
Foreign exchange adjustment		131,830			(316,711	)
Balance at end of year	$	4,618,269		$	2,274,513