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Schedule of prepayments (Details) - USD ($)
Dec. 31, 2025
Dec. 31, 2024
Notes and other explanatory information [abstract]    
Prepayment for purchases $ 78,070 $ 138,334
Prepaid sales tax 152,890 88,546
Prepaid cash incentive 46,006
Other prepayments 78,729 246,931
Prepayments $ 309,689 $ 519,817