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The United Association of Journeymen and Apprentices of the Plumbing and Pipefitting Industry of the United States and Canada
The California State Pipe Trades Council
Southern California Pipe Trades – District Council 16

Southern California Pipe Trades – Administrative Corporation

Piping Industry, Progress and Education
State Building and Construction Trades Council of California
Mechanical Contractors Association of America
California Plumbing and Mechanical Contractors Association
Air Conditioning, Refrigeration and Mechanical Contractors Association of Southern California
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