Simpson Manufacturing Co., Inc. designs, engineers, manufactures, and sells structural solutions for wood, concrete, and steel connections across North America, Europe, and the Asia Pacific. Its products include connectors, fasteners, and lateral-force resisting systems for wood construction, as well as anchors, repair and strengthening products such as coatings, sealers, mortars, fiberglass and fiber-reinforced polymer systems, and asphalt products. The company also provides engineering and design services and software solutions, serving residential, industrial, commercial, and infrastructure construction, remodeling, and do-it-yourself markets through dealers, home centers, wood component manufacturers, OEM relationships, distributors, and contractors. Founded in 1956, it is headquartered in Pleasanton, California.