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Property, Plant and Equipment, Net (Details Narrative) (10-K) - USD ($)
9 Months Ended 12 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Jun. 30, 2019
Jun. 30, 2018
Property, Plant and Equipment, Net [Abstract]        
Depreciation expense $ 94,000 $ 54,000 $ 81,000 $ 57,000