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Accounts Receivable (Tables)
6 Months Ended
Jun. 30, 2017
Accounts Receivable/Restricted Net Assets [Abstract]  
Schedule of accounts receivable
    June 30,
2017
    December 31, 2016  
Accounts receivable   $ 16,359,594     $ 15,719,847  
Less: allowance for doubtful accounts     (1,335,893 )     (1,797,476 )
    $ 15,023,701     $ 13,922,371