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Expenses by nature (Tables)
12 Months Ended
Dec. 31, 2024
Analysis of income and expense [abstract]  
Summary of Expenses by nature

 

Year ended December 31,

 

2022

 

2023

 

2024

 

NT$000

 

NT$000

 

NT$000

Raw materials and supplies used

 

4,512,527

 

3,991,490

 

4,580,706

Employee benefit expenses

 

6,466,303

 

5,836,068

 

6,450,534

Depreciation expenses

 

4,751,902

 

4,779,333

 

4,856,186

Others

 

4,699,586

 

4,926,828

 

5,634,438

 

20,430,318

 

19,533,719

 

21,521,864