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5. Inventories (Details) - USD ($)
Dec. 31, 2018
Jun. 30, 2018
Inventory Disclosure [Abstract]    
Raw Materials $ 1,554,000 $ 1,488,000
Work in process 555,300 352,700
Finished Goods 614,600 427,200
Inventory $ 2,723,900 $ 2,267,900