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ACCOUNTS RECEIVABLE (Details 1) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Receivables [Abstract]    
Accounts receivable allowance, beginning of year $ 181,473 $ 200,266
Provision adjustment 125,405 131,454
Write-off (141,038) (150,247)
Accounts receivable allowance, end of year $ 165,840 $ 181,473