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Signet Testing Laboratories, Inc.

Signet Testing Laboratories, Inc. has been a leader in the materials engineering and testing industry since 1966. Signet has an excellent reputation for providing quality services, special inspections, construction materials and geotechnical testing. With more than forty-five (45) years of experience and history of proven performance, we understand that our success is driven by the success of our clients.

Headquartered in Hayward, California, Signet operates in three (3) additional facilities in Anaheim, San Diego, and Sacramento.