| Schedule of property and equipment |
| | | | | | | | | | | | | | | | As of | | As of | | | June 30, | | December 31, | | | 2026 | | 2025 | Machinery and equipment | | $ | 5,580,089 | | $ | 5,814,929 | Leasehold improvements | | | 1,390,825 | | | 1,381,241 | Furniture | | | 1,288,537 | | | 1,261,196 | Electronic equipment | | | 1,326,767 | | | 1,282,907 | Other assets | | | 2,587,305 | | | 2,566,559 | Construction in progress | | | 251,298 | | | 96,865 | Total property and equipment, gross | | | 12,424,821 | | | 12,403,697 | Accumulated depreciation | | | (9,675,770) | | | (8,576,467) | Total property and equipment, net | | $ | 2,749,051 | | $ | 3,827,230 |
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| | | | | | | | | | | | | | | | 2025 | | 2024 | Machinery and equipment | | $ | 5,814,929 | | $ | 15,238,966 | Leasehold improvements | | | 1,381,241 | | | 2,202,945 | Furniture | | | 1,261,196 | | | 1,320,869 | Electronic equipment | | | 1,282,907 | | | 1,766,121 | Other assets | | | 2,566,559 | | | 2,751,644 | Construction in progress | | | 96,865 | | | 69,410 | Total property and equipment, gross | | | 12,403,697 | | | 23,349,955 | Accumulated depreciation | | | (8,576,467) | | | (16,709,300) | Total property and equipment, net | | $ | 3,827,230 | | $ | 6,640,655 |
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