Humble Engineering - Riverside, California

Alpha welding and fabrication - Yucaipa, California

Major League Fabrication - Grand Terrace, California

Global Plastics Recycling - Perris, California

Reyes Steel Construction - Perris, California

Walker Manufacturing Group - Ontario, California

Campos Materials - Romoland, California

Casbe Industries - Temecula, California

Gunco Steel - Calimesa, California

Sierra Custom Metal Fabrication - Riverside, California