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Taxes (Details 1) - USD ($)
Mar. 31, 2019
Jun. 30, 2018
Jun. 30, 2017
Deferred tax assets:      
Allowance for doubtful accounts $ 140,478 $ 22,225  
Inventory reserve 240,252 244,832  
Net operating loss carry-forwards 531,726 539,061  
Total 912,456 806,118  
Valuation allowance (531,726) (539,061) $ (111,882)
Total deferred tax assets 380,730 267,057  
Deferred tax liability:      
Distribution rights (274,917) (278,709)  
Total deferred tax liability (274,917) (278,709)  
Deferred tax assets (liability), net $ 11,652