SAMCEN include industrial investment and investment management; petroleum and natural gas exploration, production, storage and transportation, sales and comprehensive utilization; oil refining; storage, transportation, wholesale and retail of oil products; production, sales, storage, transportation of petrochemical products, and other chemical products; production, sales, storage and transportation of energy products such as new energy and geothermal energy; design, consulting, construction and installation of petroleum and petrochemical engineering projects; overhaul and maintenance of petroleum and petrochemical equipments, R&D, manufacturing and sales of electrical and mechanical equipments, production and sale of electricity, steam, water and industrial gas; research, development, application and consulting services of technology, e-commerce, information and alternative energy products; import & export, including import and export agency business of selfsupport products and commodities and technologies; foreign project contracting, and purchasing, and labor export; international storage and logistics business.