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Inventories (Details) - USD ($)
Dec. 31, 2018
Jun. 30, 2018
Inventory Disclosure [Abstract]    
Raw materials $ 2,733,205 $ 2,309,454
Work in process 2,275,862 2,506,891
Finished goods 2,483,133 2,263,121
Reserve for obsolescence (755,150) (674,725)
Inventories, net $ 6,737,050 $ 6,404,741