PetroChina

PetroChina is a major Chinese oil and gas company and one of the largest in the world. It was founded in 1999 and is a subsidiary of China National Petroleum Corporation (CNPC). PetroChina is involved in the exploration, production, refining, and distribution of oil and natural gas. The company plays a key role in China's energy supply and has operations in various countries, making it a significant player in the global energy market. Its activities also include investments in renewable energy, reflecting a growing focus on sustainability amid rising environmental concerns.