Aurum Research Limited 
Distributor of stand-alone oxygen and nitrogen cryogenic coolers and generators. Includes equipment specifications and engineering services. Toronto, Canada.
http://www.aurumresearch.com/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.
http://www.carbonic.com/
Clinical Air Systems Inc.
Distributes medical gas and equipment. Phoenix, Arizona.
http://www.clinicalairsystems.com/
Prest-O-Sales & Service, Inc.
A full service distributor of compressed gases and metalworking supplies. Includes directory of manufacturers and products. New York.
http://www.prest-o-sales.com/
R.V.Distributors
Distributor for liquid medical oxygen and nitrous oxide, oxygen therapy and anesthetic equipments, and accessories.
http://www.rvdgases.com/
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
http://www.scottgross.com
Alternative Refrigerant Distributors
Buys, brokers and sells hard commodity items and specializes in industrial and commercial gases and products. Company information and services.
http://www.ardtrading.com/
