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Note 1 - Nature of business and organization (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Proceeds from issuance of shares pursuant to exercise of over-allotment | $ 413,940 | $ 0 | $ 0
Common Class A |  |  |
Share issuance upon initial public offering ('IPO') | 1,250,000 |  |
Share issuance pursuant to exercise of over-allotment | 103,485 |  |
Proceeds from issuance of shares pursuant to exercise of over-allotment | $ 10 |  |
Tungray Singapore Pte. Ltd |  |  |
Equity Method Investment, Ownership Percentage | 100.00% |  |
Tung Resource Pte Ltd |  |  |
Equity Method Investment, Ownership Percentage | 100.00% |  |
Qingdao Tungray Intelligent Technology Co., Ltd |  |  |
Equity Method Investment, Ownership Percentage | 100.00% |  |

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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481687/323-10-50-3 + Details
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