Refrigerating Engineers and Technicians Association TO ENHANCE THE PROFESSIONAL DEVELOPMENT OF INDUSTRIAL REFRIGERATION OPERATING AND TECHNICAL ENGINEERS.

Roofing Contractors Association of California The Roofing Contractors Association of California (RCAC) is a nonprofit 501(c)6 professional organization dedicated to the protection and advancement of the California roofing industry in legislative, regulatory and business affairs.

State Building and Construction Trades Council of California The primary mission of the State Building and Construction Trades Council of California (SBCTC) is to improve the health, jobs safety and economic conditions of the members of its affiliates, and of all working men, women and minors in the construction industry by all lawful means.

Structural Engineers Association of California Professional organization for structural engineers providing technical publications, educational experiences, and representation before legislative and regulatory bodies.

Western Electrical Contractors Association Western Electrical Contractors Association, Inc. (WECA-IEC), a Chapter of Independent Electrical Contractors, Inc. (IEC) is a statewide non-profit organization serving merit shop electrical contractors, their employees and the industry suppliers that support them.