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OTHER ACCRUED LIABILITIES (Details) - USD ($)
Dec. 31, 2017
Dec. 31, 2016
OTHER ACCRUED LIABILITIES    
Prepayments from customers $ 355,742 $ 692,922
Accrued property taxes 14,681  
Accrued professional fees 231,826 266,747
Other accrued expenses 55,674 49,030
Other accrued liabilities $ 657,923 $ 1,008,699