Dan Portillo

At MSL, we understand that the strength of a building lies in what you can't see. That's why we're committed to delivering high-quality construction solutions to every one of our customer projects, no matter how large or complex. Since 1994, the MSL team has been California’s premier choice for reliable engineering and detailing services. We specialize in servicing the reinforcing bar and construction supply needs of large construction and civil engineering projects, delivered with unparalleled levels of safety, quality, and customer service. Headquartered in Ontario, California, MSL operates two fabrication facilities in Fontana and Fresno, California, with a new fabrication shop in Pittsburg, California.