The CNOOC and Shell Petrochemicals Company Limited (CSPC) was established in late 2000. It has built and now operates a world-scale petrochemical complex in Daya Bay Economic and Technological Development Zone, Huizhou, Guangdong Province. The joint venture partners are Shell Nanhai BV, a member of the Royal Dutch Shell Group, with a 50 per cent stake, and CNOOC Petrochemicals Investment Limited (CPIL), also with 50 per cent. CPIL is owned by China National Offshore Oil Corporation (CNOOC) (90%) and Guangdong Guangye Investment Group Company Limited (10%). .