PetroChina is a Chinese oil and gas giant that dominates the industry in China as the largest producer and distributor. Notably, it is one of the biggest revenue generators in China and a significant global oil company. Established in 1999 by China National Petroleum Corporation, PetroChina operates as a joint-stock company with limited liabilities. It boasts American Depositary Shares (ADS) and H shares listed on the New York Stock Exchange and the Stock Exchange of Hong Kong respectively. It is also listed on the Shanghai Stock Exchange.