VALUATION AND QUALIFYING ACCOUNTS (Tables)

12 Months Ended

Dec. 31, 2020

SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]

Schedule of Valuation and Qualifying Accounts

 Schedule of Valuation and Qualifying Accounts

			Additions
	Balance at		Charged to
	Beginning of		Cost and						Balance at the
	Year		Expenses			Deductions			End of Year
Allowance for doubtful accounts and returns:
Year ended December 31, 2020	$	380,212		(29,411	)		(227,187	)	$	123,614
Year ended December 31, 2019	$	398,847		(14,535	)		(4,100	)	$	380,212
Allowance for inventories valuation:
Year ended December 31, 2020	$	3,895,451		126,616			(946,547	)	$	3,075,520
Year ended December 31, 2019	$	4,460,811		(351,925	)		(213,435	)	$	3,895,451