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Investments (Details 1) - USD ($)
9 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Jun. 30, 2018
Equity Method Investments and Joint Ventures [Abstract]      
Current assets $ 39,603,257   $ 38,079,702
Noncurrent assets 250,232   291,267
Current liabilities 30,597,013   $ 29,862,664
Net sales 17,361,229 $ 28,482,180  
Gross profit 2,530,383 3,549,739  
Income from operations 943,233 1,225,896  
Net income $ 870,821 $ 1,123,997