Linde. 

Linde plc operates as an industrial gas and engineering company in North and South America, Europe, the Middle East, Africa, and the Asia Pacific. It offers atmospheric gases, including oxygen, nitrogen, argon, and rare gases; and process gases, such as carbon dioxide, helium, hydrogen, electronic gases, specialty gases, and acetylene. The company also designs and constructs turnkey process plants for third-party customers, as well as for the gas businesses in various locations, such as olefin, natural gas, air separation, hydrogen, and synthesis gas plants. It serves a range of industries, including healthcare, energy, manufacturing, food, beverage carbonation, fiber-optics, steel making, aerospace, chemicals, and water treatment. The company was founded in 1879 and is based in Woking, the United Kingdom.