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Inventories | 12 Months Ended
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Dec. 31, 2024
Inventories [abstract] |
Inventories | 10. Inventories
|  | December 31, 2023
|  | Cost |  | Allowance for impairment losses |  | Carrying amount
|  | NT$000 |  | NT$000 |  | NT$000
Raw materials |  | 2,754,911 |  | (186,263) |  | 2,568,648
|  | December 31, 2024
|  | Cost |  | Allowance for impairment losses |  | Carrying amount
|  | NT$000 |  | NT$000 |  | NT$000
Raw materials |  | 2,854,743 |  | (160,149) |  | 2,694,594
The cost of inventories recognized as an expense for the year:
|  | Year ended December 31,
|  | 2022 |  | 2023 |  | 2024
|  | NT$000 |  | NT$000 |  | NT$000
Cost of revenue |  | 18,611,515 |  | 17,723,687 |  | 19,777,825
Loss on abandonment |  | 9,448 |  | 2,483 |  | 102
(Reversal of) allowance for inventory valuation and obsolescence loss |  | (15,956) |  | 80,633 |  | (26,114)
|  | 18,605,007 |  | 17,806,803 |  | 19,751,813
a) Reversal of inventory valuation and obsolescence loss was mainly due to the reversal of previously recognized obsolescence losses by utilizing and selling obsolete raw materials. b) No inventories of the Group were pledged to others.

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