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Intangible Assets, net | 12 Months Ended
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Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract] |
Intangible Assets, net | 11. Intangible Assets, net Intangible assets as of December 31, 2020 and 2021 consisted of the followings:
|  | December 31, 2020 |  |  | December 31, 2021 |
Computer software at cost |  | $ | 32,686 |  |  | $ | 108,560 |
Sewage discharge permit* |  |  | - |  |  |  | 1,915,740 |
|  |  | 32,686 |  |  |  | 2,024,300 |
Accumulated amortization |  |  | (20,879 | ) |  |  | (62,561) |
|  | $ | 11,807 |  |  | $ | 1,961,739 |
Amortization expenses were $4,143 and $41,132 for the years ended December 31, 2020 and 2021, respectively.
* | The Company had not yet obtained the ownership of sewage discharge permit in its Zhejiang manufacturing facilities with a carrying amount of $1,873,168 as of December 31, 2021. The sewage discharge permit was registered under the name of New Era (note 12). The Company has obtained a five years sewage discharge permit on January 27, 2022.
Total future amortization expenses for finite-lived intangible assets were estimated as follows:
2022 |  | $ | 526,641 |
2023 |  |  | 526,477 |
2024 |  |  | 525,006 |
2025 |  |  | 351,010 |
2026 |  |  | 8,594 |
Thereafter |  |  | 24,011 |
Total |  | $ | 1,961,739 |

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -URI https://asc.fasb.org/subtopic&trid=2144471 + Details
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