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Intangible Assets, Net | 6 Months Ended
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Jun. 30, 2024
Intangible Assets, Net [Abstract] |
Intangible Assets, net |
| 11. | Intangible Assets, net
Intangible assets as of December 31, 2023 and June 30, 2024 consisted of the followings:
|  | December 31, 2023 |  |  | June 30, 2024 |
Computer software at cost |  | $ | 139,732 |  |  | $ | 146,807 |
Sewage discharge permit |  |  | 1,715,450 |  |  |  | 1,675,251 |
|  |  | 1,855,182 |  |  |  | 1,822,058 |
Accumulated amortization |  |  | (1,013,822 | ) |  |  | (1,222,708 | )
|  | $ | 841,360 |  |  | $ | 599,350 |
Amortization expenses were $118,906 and $115,649 for the three months ended June 30, 2023 and 2024, respectively. Amortization expenses were $240,660 and $233,494 for the six months ended June 30, 2023 and 2024, respectively. Total future amortization expenses for finite-lived intangible assets as of June 30, 2024 were estimated as follows:
Remainder of 2024 |  | $ | 231,643 |
2025 |  |  | 312,788 |
2026 |  |  | 12,280 |
2027 |  |  | 8,043 |
2028 |  |  | 7,762 |
Thereafter |  |  | 26,834 |
Total |  | $ | 599,350 |

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