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Inventories (Details) - USD ($)
Mar. 31, 2019
Jun. 30, 2018
Inventory Disclosure [Abstract]    
Raw materials $ 3,104,825 $ 2,309,454
Work in process 2,588,073 2,506,891
Finished goods 2,687,663 2,263,121
Allowance for obsolescence (793,827) (674,725)
Inventories, net $ 7,586,734 $ 6,404,741