Building on grass roots. Linde plc is the global market leader in the production and sale of technical, medical and specialty gases and gas mixtures, and on the marketing and distribution of gas related equipment, systems and services, as well as the engineering of turnkey plants. Industrial gases are being used all over the world, all the time, day and night. Regardless area - welding, cooling, heating, industrial cleaning or the lab analyses - gas is present. A success story that began with the separation of air.