Quarterly report pursuant to Section 13 or 15(d)

Accounts Receivable (Details)

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Accounts Receivable (Details) - USD ($)
Sep. 30, 2018
Dec. 31, 2017
Accounts Receivable [Abstract]    
Accounts receivable $ 5,905,798 $ 13,080,050
Less: allowance for doubtful accounts (29,110) (67,379)
Accounts receivable, net $ 5,876,688 $ 13,012,671