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Inventories (Details) - USD ($)
Sep. 30, 2019
Jun. 30, 2019
Inventory Disclosure [Abstract]    
Raw materials $ 3,667,721 $ 3,467,105
Work in process 2,267,563 2,288,226
Finished goods 2,899,810 2,704,471
Allowance for obsolescence (818,406) (775,275)
Inventories, net $ 8,016,688 $ 7,684,527