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Intangible assets, net | 12 Months Ended
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Dec. 31, 2022
ZHEJIANG TIANLAN |
Intangible assets, net |
10. | Intangible assets, net
|  | December 31, |
|  | 2022 |  |  | 2021 |
|  | RMB’000 |  |  | RMB’000 |
Amortizable i ntangible a ssets |  |  |  |  |  |
Gross carrying amount |  |  |  |  |  |
Patents |  |  | 3,950 |  |  |  | 3,750 |
Others |  |  | 165 |  |  |  | 165 |
|  |  | 4,115 |  |  |  | 3,915 |
Less: Accumulated amortization |  |  | (2,307 | ) |  |  | (2,050 | )
Net carrying amount |  |  | 1,808 |  |  |  | 1,865 |
|  | Year ended December 31, |
|  | 2022 |  |  | 2021 |  |  | 2020 |
|  | RMB’000 |  |  | RMB’000 |  |  | RMB’000 |
Amortization expense |  |  | 257 |  |  |  | 255 |  |  |  | 142 |
At December 31, 2022, estimated future intangible assets amortization expense for each of the next five years and thereafter was as follows:
|  | Future amortization expense |
|  | RMB’000 |
2023 |  |  | 257 |
2024 |  |  | 257 |
2025 |  |  | 257 |
2026 |  |  | 257 |
2027 |  |  | 257 |
Thereafter |  |  | 523 |
Total |  |  | 1,808 |

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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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