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OTHER ACCRUED LIABILITIES (Details) - USD ($)
Dec. 31, 2018
Dec. 31, 2017
OTHER ACCRUED LIABILITIES    
Prepayments from customers $ 860,926 $ 355,742
Accrued property taxes 170,568 14,681
Accrued professional fees 294,903 231,826
Other accrued expenses 60,890 55,674
Total $ 1,387,287 $ 657,923