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Intangible Assets, Net | 9 Months Ended
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Sep. 30, 2024
Intangible Assets, Net [Abstract] |
Intangible Assets, net |
| 11. | Intangible Assets, net
Intangible assets as of December 31, 2023 and September 30, 2024 consisted of the followings:
|  | December 31, 2023 |  |  | September 30, 2024 |
Computer software at cost |  | $ | 139,732 |  |  | $ | 158,831 |
Sewage discharge permit |  |  | 1,715,450 |  |  |  | 1,734,761 |
|  |  | 1,855,182 |  |  |  | 1,893,592 |
Accumulated amortization |  |  | (1,013,822 | ) |  |  | (1,386,479 | )
|  | $ | 841,360 |  |  | $ | 507,113 |
Amortization expenses were $133,450 and $118,987 for the three months ended September 30, 2023 and 2024, respectively. Amortization expenses were $374,110 and $352,481 for the nine months ended September 30, 2023 and 2024, respectively. Total future amortization expenses for finite-lived intangible assets as of September 30, 2024 were estimated as follows:
Remainder of 2024 |  | $ | 120,482 |
2025 |  |  | 326,168 |
2026 |  |  | 14,986 |
2027 |  |  | 9,653 |
2028 |  |  | 8,037 |
Thereafter |  |  | 27,787 |
Total |  | $ | 507,113 |

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