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Retained earnings (Tables)

12 Months Ended

Dec. 31, 2020

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Summary of Distribution Towards Legal Reserve and Cash Dividend


		2017								2018								2019
		Amount				Cash Distribution per share				Amount				Cash Distribution per share				Amount				Cash Distribution per share
		Amount				Cash Distribution per share				Amount				Cash Distribution per share				Amount				Cash Distribution per share
		NT$000				NT$				NT$000				NT$				NT$000				NT$
Legal reserve			302,653								110,308								258,416
Special reserve			—								—								19,802
Cash dividend			256,806				0.30				872,718				1.20				1,309,032				1.80