Quarterly report pursuant to Section 13 or 15(d)

Accounts Receivable - Accounts receivable, net (Details)

v3.8.0.1
Accounts Receivable - Accounts receivable, net (Details) - USD ($)
Mar. 31, 2018
Dec. 31, 2017
Trade receivables $ 307,892 $ 378,894
Other receivables 25,059 20,589
Gross accounts receivable 332,951 399,483
Allowance for doubtful accounts (180,235) (178,399)
Net accounts receivable $ 152,716 $ 221,084