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Consolidated Balance Sheets (Parenthetical) - USD ($)
Jun. 30, 2021
Jun. 30, 2020
Allowance for doubtful accounts $ 51,495 $ 88,485
Accumulated depreciation property and equipment $ 824,123 $ 804,999
Preferred Stock, Par or Stated Value Per Share $ 0.001 $ 0.001
Preferred Stock, Shares Authorized 20,000,000 20,000,000
Preferred Stock, Shares Issued 0 0
Preferred Stock, Shares Outstanding 0 0
Common Stock, Par or Stated Value Per Share $ 0.001 $ 0.001
Common Stock, Shares Authorized 100,000,000 100,000,000
Common Stock, Shares, Issued 26,498,215 26,032,263
Common Stock, Shares, Outstanding 26,498,215 26,032,263
Use Rights    
Accumulated depreciation property and equipment $ 463,022 $ 390,691