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Investments (Details 1) - USD ($)
3 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Jun. 30, 2019
Equity Method Investments and Joint Ventures [Abstract]      
Current assets $ 37,362,920   $ 35,675,858
Noncurrent assets 218,073   241,580
Current liabilities 28,543,605   $ 26,668,485
Net sales 7,540,520 $ 7,438,062  
Gross profit 764,612 1,013,655  
Income from operations 138,891 292,670  
Net income $ 144,590 $ 292,113