PetroChina Company Limited Class H
PetroChina Company Limited (0857) is one of the largest oil and gas producers and distributors in China and globally. It operates in several key sectors, including exploration and production, refining and chemicals, marketing and natural gas, and pipelines. The company is engaged in the exploration, development, production, and sale of crude oil and natural gas, as well as the refining, transportation, storage, and sale of petroleum products, petrochemical products, and other chemical products.