Valero Energy Corporation is a leading global manufacturer and marketer of transportation fuels and petrochemicals. Based in San Antonio, Texas, the company operates 15 petroleum refineries and over 5,800 retail and wholesale locations in the United States, Canada, and the Caribbean. Valero's refineries process approximately 2.4 million barrels of crude oil per day and produce a range of petroleum products, including gasoline, diesel fuel, jet fuel, and petrochemicals. The company's retail and wholesale operations sell a variety of fuels and convenience items under the Shell, Valero, and Diamond Shamrock brands. Valero also markets its products in the United States and Canada through a network of independent marketers and distributors.