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The United Association of Journeymen and Apprentices of the Plumbing and Pipefitting Industry of the United States and Canada

www.ua.org

The California State Pipe Trades Council

www.calpipes.org

Southern California Pipe Trades – District Council 16

www.dc16.org

Southern California Pipe Trades – Administrative Corporation

www.scptac.org

Piping Industry, Progress and Education

www.pipe.org

State Building and Construction Trades Council of California

www.cabuildingtrades.org

Mechanical Contractors Association of America

www.mcaa.org

California Plumbing and Mechanical Contractors Association

www.cpmca.org

Air Conditioning, Refrigeration and Mechanical Contractors Association of Southern California

www.arcamca.org