China National Petroleum Corporation (CNPC for short) is an important state-owned backbone enterprise and one of the world's major oil and gas producers and suppliers. It is a comprehensive international energy company integrating domestic and foreign oil and gas exploration and development and new energy, refining and sales and new materials, support and services, capital and finance. It carries out oil and gas investment business in 32 countries and regions around the world. In 2021, it will rank the third in the comprehensive ranking of the world's 50 major oil companies and the fourth in the ranking of Fortune's global 500 major companies.