Governments and large businesses often use charge cards to pay for and keep track of expenses related to official business; these are often referred to as purchasing cards. Some retailers and banks issue charge cards to customers (ex. British Petroleum, Speedway, Shell Oil Company, ExxonMobil, ARCO, Sinclair Oil Corporation, Kwik Fill, Kwik Trip/Kwik Star, Silicon Valley Bank, Sunoco, Aloha Petroleum, Rutter's, Clark Brands, Comdata, Fuelman, U.S. Bank, Lloyds Bank, Brex Inc., World Fuel Services, Casey's General Stores, Edenred, 7-Eleven, Chevron Corporation, Valero Energy, CENEX, MAPCO Express, Inc., Citgo, Lukoil, Phillips 66, Delek US, Holiday Stationstores, PNC Financial Services, Peoples Bank, Citibank, Gulf Oil LP, Murphy USA, Husky Energy, GetGo, Kum & Go, Meijer, QuikTrip, Sheetz, Wawa, Inc., CountryMark, NOCO Energy Corporation, Marathon Petroleum, Circle K, Pilot Flying J, RaceTrac, QuickChek Corporation, Royal Farms, Andeavor, Stripes LLC, WEX Inc., Thorntons Inc., Irving Oil, Quarles Petroleum Inc., Spinx, Fuel Express Inc., CEFCO Convenience Stores Inc., Petrol Plus Region, Bosselman Enterprises, Maverick Inc., Mirabito Holdings Inc., BAC Community Bank, Mansfield Energy Corp., Simonson Station Stores, ASAP Energy Inc., Daigle Oil Company, Riggins Inc., P-Fleet Inc.).