| INTANGIBLE ASSETS |
The details of intangible assets are as follows: | | | At June 30, 2026 | | | In thousands of USD | | Gross
carrying
amount
| | | Accumulated
amortization | | | Impairment
amount | | | Net
carrying
value | | | Rights to electrical capacity | | | 51,710 | | | | (70 | ) | | | - | | | | 51,640 | | | Technologies | | | 63,633 | | | | (38,854 | ) | | | - | | | | 24,779 | | | Patents, trademarks, royalties and other rights | | | 10,735 | | | | (5,182 | ) | | | - | | | | 5,553 | | | Software | | | 1,742 | | | | (800 | ) | | | - | | | | 942 | | | Total | | | 127,820 | | | | (44,906 | ) | | | - | | | | 82,914 | | | | | At December 31, 2025 | | | In thousands of USD | | Gross
carrying
amount | | | Accumulated
amortization | | | Impairment
amount | | | Net
carrying
value | | | Rights to electrical capacity | | | 51,710 | | | | - | | | | - | | | | 51,710 | | | Technologies | | | 63,633 | | | | (28,281 | ) | | | - | | | | 35,352 | | | Patents, trademarks, royalties and other rights | | | 9,168 | | | | (3,765 | ) | | | - | | | | 5,403 | | | Software | | | 1,686 | | | | (719 | ) | | | - | | | | 967 | | | Total | | | 126,197 | | | | (32,765 | ) | | | - | | | | 93,432 | | Amortization expenses for intangible assets were US$12.0 million and US$11.6 million for the six months ended June 30, 2026 and 2025 respectively. No impairment loss was recorded for the six months ended June 30, 2026 and 2025. Estimated amortization expense relating to the existing intangible assets with finite lives for each of the next five years as of June 30, 2026 is as follow: | | | At
June 30, | | | In thousands of USD | | 2026 | | | Second half of 2026 | | | 12,313 | | | 2027 | | | 17,405 | | | 2028 | | | 1,611 | | | 2029 | | | 279 | | | 2030 | | | 10 | | | Thereafter | | | 11 | |
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