OTHER ACCRUED LIABILITIES (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
OTHER ACCRUED LIABILITIES
Prepayments from customers	$ 2,339,530	$ 1,686,868
Accrued professional fees	185,515	331,204
Current portion - preferred stock repurchase	1,098,282	1,092,282
Other accrued expenses	102,200	288,550
Other accrued liabilities	$ 3,725,527	$ 3,398,904