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Note 15 - Income taxes: Schedule of Income before Income Tax, Domestic and Foreign (Details) - USD ($)
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Singapore      
Income (Loss) from Continuing Operations before Income Taxes, Foreign $ 996,157 $ 2,679,481 $ 3,278,678
PRC      
Income (Loss) from Continuing Operations before Income Taxes, Foreign (1,110,121) (1,384,839) 190,990
Cayman      
Income (Loss) from Continuing Operations before Income Taxes, Foreign (179,671) 0 0
Income (Loss) from Continuing Operations before Income Taxes, Foreign $ (293,635) $ 1,294,642 $ 3,469,668