XML 69 R55.htm IDEA: XBRL DOCUMENT v3.21.1
OTHER ACCRUED LIABILITIES (Details) - USD ($)
Dec. 31, 2020
Dec. 31, 2019
OTHER ACCRUED LIABILITIES    
Prepayments from customers $ 1,686,868 $ 998,601
Accrued professional fees 331,204 263,757
Current portion - preferred stock repurchase 1,092,282  
Other accrued expenses 288,550 124,791
Total $ 3,398,904 $ 1,387,149