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Related party transactions (Tables)

12 Months Ended

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

X

- Definition

The disclosure of information about key management personnel. [Refer: Key management personnel of entity or parent [member]]

+ References

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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
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-Number 24
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