PetroChina is one of the major oil and gas producers and sellers in China and also a key player in the world petroleum industry. It engages in various activities involving oil, gas and new energy, including:

• Exploration, development, production and sales of crude oil and natural gas

• Refining of crude oil and petroleum products
  Production and sales of basic and derivative chemical products and other chemical product

• Marketing and trading of refined oil products

• Transportation of natural gas, crude oil and refined products, and sales of natural gas