Quarterly report pursuant to Section 13 or 15(d)

D. ACCOUNTS RECEIVABLE (Tables)

v3.19.2
D. ACCOUNTS RECEIVABLE (Tables)
6 Months Ended
Jun. 30, 2019
Receivables [Abstract]  
Accounts Receivable
  June 30,
2019
  December 31,
2018
 
Accounts receivable $ 2,523,149   $ 1,146,832  
Allowance for doubtful accounts   (67,894 )   (65,541 )
Accounts receivable, net $ 2,455,255   $ 1,081,291