SOL Group 
An Italian based multinational company offering production, distribution and sales of industrial, medical and food gases and related products.
http://www.solworld.com/American Gas Group
A manufacturer, importer, exporter and worldwide distributor of specialty, rare, industrial and liquid gas products including supplies, hardware and equipment for the compressed gas and welding industries. Toledo, Ohio U.S.A.
http://www.americangasgroup.com/
Scientific & Technical Gases Ltd.
Manufactures high purity gases and gas mixtures in high pressure and disposable containers.
http://www.stgas.org.uk
Dominion Technology Gases
Supplier of industrial, specialty, laboratory, saturation diving and cryogenic gases.
http://www.dominion-gas.co.uk
Tech Air
Provider of industrial, medical, and specialty gases, gas handling and cryogenic equipment, welding equipment and supplies in New York and Connecticut, USA.
http://www.techair.com
www.accurategasco.com
Supplier of specialty gases for research, analytical, medical, and calibration as well as supplier of process chemicals used in manufacturing processes.
http://www.accurategasco.com
ACP
European producer of bulk carbon dioxide, offering bulk liquid, cylinder, and dry ice forms. Includes technical information and specifications.
http://www.acpco2.com
Welco-CGI Gas Industries
Supplier of gases and related equipment and services in the US Northeast. Products include specialty gases, industrial welding gases and supplies, medical and beverage gases, and helium.
http://www.welco-cgi.com
Hong Kong Specialty Gases
Distributor and manufacturer of specialty gases and gaseous chemicals and associated equipment, supplying Hong Kong and China.
http://www.hsg.com.hk
