Distributor of industrial, specialty and medical gases, non-pipeline propane, and fire protection equipment in the United States. The company distributes oxygen, nitrogen, hydrogen, argon, helium, acetylene, carbon dioxide, and nitrous oxide. It offers various specialty gases that include rare gases, high-purity gases and blended, and multi-component gas mixtures. It sells propane gas to residential, commercial, and industrial customers. It rents cylinders, cryogenic liquid containers, bulk storage tanks, and tube trailers. It sells hard goods, including welding machines, wire, fluxes, and electrodes, as well as various supporting equipments.