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ACCOUNTS RECEIVABLE (Details) - USD ($)
Mar. 31, 2019
Dec. 31, 2018
Accounts Receivable, Net, Current [Abstract]    
Accounts receivable trade $ 14,231,953 $ 9,859,758
Allowance for doubtful accounts (524,788) (831,768)
Accounts receivable trade, net $ 13,707,165 $ 9,027,990