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Convertible bonds (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2025
Short-Term Debt [Line Items] |
Schedule of convertible bonds | Schedule of convertible bonds
|  | 2025 |  |  | 2024 |
|  | December 31, |
|  | 2025 |  |  | 2024 |
|  | US$ |  |  | US$ |
Convertible Promissory Note - A |  |  | - |  |  |  | 1,750,000 |
Convertible Promissory Note - B |  |  | 4,599,488 |  |  |  | - |
Net carrying amount |  |  | 4,599,488 |  |  |  | 1,750,000 |
Less: maturing within one year |  |  | - |  |  |  | - |
Mature after one year |  |  | 4,599,488 |  |  |  | 1,750,000 |
Convertible Note [Member] |
Short-Term Debt [Line Items] |
Schedule of assumptions used in determining the fair value | As of August 31, 2024, and December 31, 2024, the key assumptions used in the valuation were as follows: Schedule of assumptions used in determining the fair value
Key Assumptions |  | August 31, 2024 |  |  | December 31, 2024 |
Stock Price (USD) |  |  | 6.28 |  |  |  | 1.80 |
Risk-Free Rate (%) |  |  | 4.11 |  |  |  | 4.09 |
Volatility Rate (%) |  |  | 36.86 |  |  |  | 47.23 |
Bond Yield (%) |  |  | 15.55 |  |  |  | 13.90 |
As of October 8, 2025, and December 31, 2025, the key assumptions used in the valuation were as follows:
Key Assumptions |  | October 8, 2025 |  |  | December 31, 2025 |
Stock Price (USD) |  |  | 1.73 |  |  |  | 1.79 |
Risk-Free Rate (%) |  |  | 3.517 |  |  |  | 3.413 |
Volatility Rate (%) |  |  | 118.87 |  |  |  | 122.11 |
Bond Yield (%) |  |  | 15.87 |  |  |  | 20.4 |

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- Definition Tabular disclosure of short-term debt arrangements (having initial terms of repayment within one year or the normal operating cycle, if longer) including: (1) description of the short-term debt arrangement; (2) identification of the lender or type of lender; (3) repayment terms; (4) weighted average interest rate; (5) carrying amount of funds borrowed under the specified short-term debt arrangement as of the balance sheet date; (6) description of the refinancing of a short-term obligation when that obligation is excluded from current liabilities in the balance sheet; and (7) amount of a short-term obligation that has been excluded from current liabilities in the balance sheet because of a refinancing of the obligation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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