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Accounts Receivable (Tables)
6 Months Ended
Jun. 30, 2018
Receivables [Abstract]  
Accounts Receivable, Net of Allowances for Sales Returns and Doubtful Accounts

Accounts receivable, net of allowances for sales returns and doubtful accounts, consisted of the following:

 

    June 30, 2018     December 31, 2017  
Trade accounts receivable   $ 4,089,042     $ 4,333,608  
Less allowances     -       -  
Total accounts receivable, net   $ 4,089,042     $ 4,333,608