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OTHER ACCRUED LIABILITIES (Details) - USD ($)
Sep. 30, 2019
Dec. 31, 2018
OTHER ACCRUED LIABILITIES    
Prepayments from customers $ 530,997 $ 860,926
Accrued property taxes 351,100 170,568
Accrued professional fees 188,257 294,903
Other accrued expenses 150,447 141,538
Total $ 1,220,801 $ 1,467,935