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Income taxes (Details Narrative)
Sep. 30, 2022
USD ($)
U S Tax Authorities [Member]  
Operating Loss Carryforwards [Line Items]  
Prepaid Taxes $ 214,818
Accrued Income Taxes 375,087
Chinese Tax Authorities [Member]  
Operating Loss Carryforwards [Line Items]  
Prepaid Taxes 282,029
Accrued Income Taxes $ 299,563