Material Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2025

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Estimated useful lives of the Group's property and equipment

The estimated useful lives of the Group’s property and equipment are as follows:


		Useful lives (years)
Buildings and structures		15 ~ 40
Machinery		3 ~ 15, 30
Other property and equipment		3 ~ 10
Right-of-use assets		1 ~ 50

Estimated useful lives of the Group's intangible assets

The estimated useful lives of the Group’s intangible assets are as follows:


		Useful lives (years)
Frequency usage rights		5 ~ 10
Land usage rights		5
Industrial rights		5, 10
Development costs		5
Facility usage rights		10, 20
Customer relations		3 ~ 15
Other		3 ~ 20