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ACCOUNTS RECEIVABLE (Details) - USD ($)
Jun. 30, 2016
Dec. 31, 2015
Accounts Receivable, Net, Current [Abstract]    
Accounts receivable $ 9,239,682 $ 8,280,749
Allowance for doubtful accounts (1,877,119) (1,965,335)
Accounts receivable, net $ 7,362,563 $ 6,315,414