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Entity Subsidiaries

: Westlake Chemical

Subsidiary	Percentage	From	To
Taiwan Chlorine Industries Ltd.	60.00%	03/2021	12/2050
Vinnolit Holdings GmbH	100.00%	12/2010	12/2050
Westlake Vinnolit GmbH & Co. KG	100.00%	01/2023	12/2050