Major US Fire Fighting Foam Concentrate Manufacturers:

Angus part of the Kidde Fire Fighting organization
Angus Fire USA

Ansul
http://www.ansul.com

Buckeye Fire Equipment Company
http://www.buckeyef.com

Chemguard Inc.
http://www.chemguard.com

National Foam part of the Kidde Fire Fighting organization
National Foam

Williams Fire and Hazard Control
http://www.williamsfire.com

Trade Associations:

American Fire Sprinkler Association
http://www.sprinklernet.org

Compressed Gas Association
http://www.cganet.com/

Fire Suppression Systems Association
http://www.fssa.net

International Marine Organization
http://www.imo.org/

National Association of Fire Equipment Distributors
http://www.nafed.org/

National Fire Protection Association
http://www.nfpa.org

National Fire Sprinkler Association
http://www.nfsa.org