Chevron Corporation is an integrated energy company engaged in oil and gas exploration, production, refining, and marketing. The company operates upstream assets that produce crude oil and natural gas and downstream operations that refine, transport, and sell petroleum products. Chevron also has a chemicals business through joint ventures that manufacture petrochemical products. Founded in the nineteenth century, Chevron operates globally across energy markets. The company manages large-scale energy projects and invests in operational efficiency and technology development. Leadership oversees energy production, refining, chemicals, and global trading activities.