China National Petroleum Corporation (CNPC) is a state-owned oil and gas company based in Beijing, China. It is one of the largest oil and gas companies in the world, and is involved in a range of activities including exploration, production, refining, and marketing of oil and natural gas, as well as the production of petrochemicals and other chemical products. CNPC has operations in over 30 countries around the world, and is actively involved in the development of unconventional energy sources such as shale gas and tight oil. In addition to its core business of oil and gas, CNPC is also involved in a number of other industries, including engineering and construction, finance, and media.