Aurum Research Limited - Distributor of stand-alone oxygen and nitrogen cryogenic coolers and generators. Includes equipment specifications and engineering services. Toronto, Canada. Carbonic Systems - An authorized distributor of the Tomco Equipment Company offering CO2 and related equipment throughout the North Eastern United States. Covers applications and uses. Elmira, New York. Prest-O-Sales & Service, Inc. - A full service distributor of compressed gases and metalworking supplies. Includes directory of manufacturers and products. New York. R.V.Distributors - Distributor for liquid medical oxygen and nitrous oxide, oxygen therapy and anesthetic equipment, and accessories. Scott-Gross Company, Inc. - Regional supplier of bulk cryogenic, industrial, medical and specialty gases, propane and dry ice as well as welding equipment and supplies. USA Alternative Refrigerant Distributors - Buys, brokers and sells hard commodity items and specializes in industrial and commercial gases and products. Company information and services.