CNOOC and shell petrochemical company limited (CSPC), established in 2, built and operated a world-class petrochemical complex in Daya bay economic and technological development zone, Huizhou city, Guangdong province. China Shipping Shell Petrochemical Joint Factory adopts the world's most advanced technology and management mode in line with international standards for design, construction and operation, and most production devices have world-class scale. It has introduced 13 patented technologies through international bidding and maintained a leading position in the same industry. Adhering to the concept of sustainable development, the company takes various measures to protect the local environment, and contributes to the harmony and progress of the local economy and society by supporting the development of local culture, education, health and public welfare undertakings. The main facilities of the factory include 11 sets of production devices, utilities such as steam and power generation, storage and transportation facilities and environmental protection facilities. The core of the factory is an ethylene cracking unit with an annual output of 95, tons of ethylene and 5, tons of propylene. China Shipping Shell Petrochemical Joint Factory produces 2.7 million tons of petrochemical products every year, mainly derivatives of ethylene and propylene, which are supplied to the domestic market in China.