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Schedule of Accounts Receivable (Details) - USD ($)
Jun. 30, 2019
Mar. 31, 2019
Mar. 31, 2018
Trade receivables, net $ 4,199,323 $ 3,142,580 $ 2,667,010
Less: Allowance for doubtful accounts (40,000) (40,000) (40,000)
Accrual for 2% 10 days discount (41,206) (34,399) (27,915)
Net accounts receivable $ 4,118,117 $ 3,068,181 $ 2,599,095