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Other income (expenses), net (Tables)

12 Months Ended

Dec. 31, 2021

Text block [abstract]

Summary of Other Income (Expenses), Net


		Year ended December 31,
		2019				2020				2021
		NT$000				NT$000				NT$000
Gain on disposal of scrapped materials			43,652				51,077				52,254
Royalty income			12,336				2,962				907
Gain on disposal of items purchased on behalf of others			15,080				30,140				21,945
Gain on disposal of property, plant and equipment, net			20,271				48,070				33,935
Insurance compensation income			10,435				—				—
Impairment loss on property, plant and equipment			(9,938	)			—				(4,843	)
Gains from lease modifications			—				—				891
Others			1,092				3,329				20,498

			92,928				135,578				125,587