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ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES    
Accrued payroll and welfare $ 10,086 $ 6,970
VAT and other tax payables 14,373 367
Accrued shipment expenses 1,245 1,011
Others 4,444 3,874
Total $ 30,148 $ 12,222