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Schedule of investing activities with partial cash payments (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Investing Activities With Partial Cash Payments |  |
Purchase of property, plant and equipment | $ 44,224 | $ 154,594
Add: Opening balance of payable on equipment | 12,140 | 278,011
Less: Ending balance of payable on equipment | (11,657) | (12,140)
Less: Opening balance of prepaid on property, plant and equipment | (411,178) | (626,179)
Add: Ending balance of prepaid on property, plant and equipment | 390,363 | 411,178
Effect of foreign exchange rate changes | 1,333 |
Effects from disposal of investments |  | (111,954)
Cash paid during the year | $ 25,225 | $ 93,510

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