| Summary of property, equipment and software |
| | | | | | | As of December 31, | | | 2024 | | 2025 | | | US$ | | US$ | Machinery and laboratory equipment | | 5,116,503 | | 5,232,597 | Leasehold improvements | | 1,030,798 | | 1,054,204 | Electronic equipment | | 1,793,132 | | 1,818,366 | Furniture and tools | | 49,085 | | 50,035 | Vehicles | | 77,767 | | 43,635 | Software | | 358,952 | | 364,586 | Total property, equipment and software | | 8,426,237 | | 8,563,423 | Less: accumulated depreciation and amortization | | (7,300,848) | | (7,846,049) | Net book value | | 1,125,389 | | 717,374 |
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