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Note 15 - Income taxes: Schedule of Income before Income Tax, Domestic and Foreign (Details) - USD ($) | 12 Months Ended
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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

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- Definition The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10A -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-10A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1 + Details
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