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