L'Air Liquide S.A. provides gases, technologies, and services for the industrial and health sectors in Europe, the Americas, the Asia Pacific, the Middle East, and Africa. It operates in Gas & Services, Engineering & Construction, and Global Markets & Technologies segments. The Gas & Services segment comprises large industries business, which offers gas and energy solutions including oxygen, nitrogen, argon, hydrogen, and carbon monoxide, as well as operates cogeneration plants to supply steam and electricity to metals, chemicals, refining, and energy industries; and industrial merchant business line provides industrial gases, equipment, hardgoods, and associated services to materials and energy, automotive and manufacturing, food and pharmaceuticals, technology and research, and craftsmen and retail sectors.