Quarterly report pursuant to Section 13 or 15(d)

D. ACCOUNTS RECEIVABLE (Tables)

v3.8.0.1
D. ACCOUNTS RECEIVABLE (Tables)
3 Months Ended
Mar. 31, 2018
Receivables [Abstract]  
Accounts Receivable
    March 31,
2018
    December 31,
2017
 
Accounts receivable   $ 1,294,017     $ 1,632,459  
Allowance for doubtful accounts     (9,742 )     (22,173 )
Accounts receivable, net   $ 1,284,275     $ 1,610,286