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Investments (Details 1) - USD ($)
6 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Jun. 30, 2019
Equity Method Investments and Joint Ventures [Abstract]      
Current assets $ 38,714,700   $ 35,675,858
Noncurrent assets 220,420   241,580
Current liabilities 29,531,039   $ 26,668,485
Net sales 16,283,932 $ 16,306,851  
Gross profit 1,674,366 2,020,501  
Income from operations 287,432 665,455  
Net income $ 286,902 $ 589,545