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Expenses by nature | 12 Months Ended
--- | ---
Dec. 31, 2023
Analysis of income and expense [abstract] |
Expenses by nature | 29. Expenses by nature
|  | Year ended December 31,
|  | 2021 |  | 2022 |  | 2023
|  | NT$000 |  | NT$000 |  | NT$000
Raw materials and supplies used |  | 5,518,145 |  | 4,512,527 |  | 3,991,490
Employee benefit expenses |  | 6,757,888 |  | 6,466,303 |  | 5,836,068
Depreciation expenses |  | 4,634,112 |  | 4,751,902 |  | 4,779,333
Others |  | 5,053,088 |  | 4,699,586 |  | 4,926,828
|  | 21,963,233 |  | 20,430,318 |  | 19,533,719

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