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Income Taxes - Provision for income taxes (Details) - USD ($)
12 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Current    
Federal $ 0 $ 0
State 2,201 2,088
Foreign (Mexico) 5,635 24,952
Deferred    
Federal 0 0
Foreign 0 0
State 0 0
Provision for income tax expense $ 7,836 $ 27,040