Matheson Gas Products, now known as Matheson Tri-Gas, is one of the leading electronic gas companies in the United States. It provides pure, mixture, semiconductor, atmospheric, medical, cutting and welding gas solutions. The company offers various types of gas handling equipment, such as purifiers, cylinders, manifolds, panels, generators, pressure regulators, filters and valves. Matheson Tri-Gas also provides engineering and gas management and generation services. It has received its ISO 9001:2000 certification from the International Organization for Standardization. The company is a subsidiary of the Taiyo Nippon Sanso Corporation Group. With a location in Montgomeryville, Pa., Matheson Tri-Gas maintains offices throughout the U.S.