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3. Summary of Significant Accounting Policies (Details Narrative) - USD ($)
Jun. 30, 2019
Mar. 31, 2019
Accounting Policies [Abstract]    
Allowance for doubtful accounts $ 33,000 $ 24,000
Allowance for potential discounts, returns, distributor fees and rebates 439,000 443,000
Inventory reserves $ 81,000 $ 184,000