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Related party transactions (Tables) | 12 Months Ended
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Dec. 31, 2024
Related party transactions [abstract] |
Summary of Significant Related Party Transactions | b) Names of related parties and relationship
Name |  | Relationship
Unimos Shanghai |  | Associate (Note 1)
JMC |  | Associate
Daypower Energy |  | Associate (Note 2)
Siliconware Precision Industries Co., Ltd. (“SPIL”) |  | Entity that has significant influence over the Company
Note 1: No longer a related party after the completion of the equity transfer in May 2024. Note 2: Becomes a related party in August 2023. c) Significant related party transactions (a) Payable to equipment suppliers
|  | December 31, 2023 |  | December 31, 2024
|  | NT$000 |  | NT$000
Daypower Energy |  | 58,549 |  | 21,473
(b) Property transactions i) Acquisition of property, plant and equipment
|  | Year ended December 31,
|  | 2022 |  | 2023 |  | 2024
|  | NT$000 |  | NT$000 |  | NT$000
SPIL |  | — |  | 35,261 |  | 10,496
ii) Acquisition of financial assets
|  |  |  |  |  |  |  | Year ended December 31, 2024
|  | Account items |  | Number of shares traded |  | Object of transaction |  | Acquisition price
|  |  |  |  |  |  |  | NT$000
Associate |  | Investments accounted for using equity method |  | 1,000 thousand shares |  | Daypower Energy |  | 12,500
Key Management Personnel Compensation | d) Key management personnel compensation
|  | Year ended December 31,
|  | 2022 |  | 2023 |  | 2024
|  | NT$000 |  | NT$000 |  | NT$000
Salaries and other short-term employee benefits |  | 211,620 |  | 176,702 |  | 181,436
Post-employment compensation |  | 2,197 |  | 2,158 |  | 2,396
|  | 213,817 |  | 178,860 |  | 183,832

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- Definition The disclosure of information about key management personnel. [Refer: Key management personnel of entity or parent [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 10 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_10_e&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The disclosure of transactions between the entity and its related parties. [Refer: Total for all related parties [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 24 -IssueDate 2024-01-01 -Paragraph 18 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2024-en-r&anchor=para_18&doctype=Standard -URIDate 2024-03-27 + Details
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