Linde plc operates as an industrial gas company in North and South America, Europe, the Middle East, Africa, and the Asia Pacific. It offers oxygen, nitrogen, argon, rare gases, carbon dioxide, hydrogen, helium, electronic and specialty gases, acetylene, and carbon monoxide. The company also designs and constructs turnkey process plants, such as olefin, natural gas, air separation, hydrogen and synthesis gas, and other plants. It serves healthcare, petroleum refining, manufacturing, food, beverage carbonation, fiber-optics, steel making, aerospace, electronics, chemical, and water treatment industries. The company was founded in 1879 and is based in Guildford, the United Kingdom.