PetroChina

1. Exploration and production of crude oil and natural gas: PetroChina engages in the exploration, development, and production of domestic and international oil and gas resources.
2. Refining and marketing: The company operates a network of refineries, petrochemical plants, and gas stations to refine and sell various petroleum products, such as gasoline, diesel, and lubricants.
3. Pipeline transportation and storage: PetroChina owns and operates a vast network of pipelines for the transportation of oil, natural gas, and other petroleum products, as well as storage facilities for these resources.
4. Chemicals and fertilizers: The company produces and sells a wide range of chemicals and fertilizers, including methanol, polyethylene, and synthetic rubber.
5. Natural gas and LNG: PetroChina is a major player in the global natural gas market and supplies natural gas to domestic and international customers through pipelines and liquefied natural gas (LNG) terminals.
6. Trading and sales: The company engages in the trading and sales of various energy and petrochemical products, including crude oil, natural gas, refined products, and chemicals.
7. Engineering and construction: PetroChina offers engineering, procurement, and construction (EPC) services for oil and gas projects, as well as design and technical consulting services.
8. Research and development: The company has a strong focus on research and development to improve its production processes, develop new technologies, and explore alternative energy sources.
9. Renewable energy: In addition to its traditional fossil fuel business, PetroChina has also invested in renewable energy sources such as wind power, solar power, and geothermal energy.
10. Petrochemical equipment manufacturing: PetroChina has a subsidiary company, CNPC Equipment, which specializes in the manufacturing and sale of oil and gas equipment, ranging from drilling rigs to pipeline valves.