Entity Subsidiaries

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Subsidiary Country Subsidiaries Percentage From To
CNOOC (Taizhou) Petrochemical Co. Ltd. 49.00% 01/2010 12/2050
CNOOC Ningbo Daxie Petrochemical Co. Ltd. 100.00% 01/2000 12/2050
Shell CNOOC (CSPCL) Nanhai Petrochemicals 50.00% 03/2016 12/2050