Simpson Manufacturing Co Inc a Delaware Corporation, through its subsidiary, Simpson Strong-Tie Company Inc., designs, engineers and manufactures wood construction products, including connectors, truss plates, fastening systems, fasteners and pre-fabricated shearwalls, and concrete construction products used for concrete, masonry and steel, including adhesives, chemicals, mechanical anchors, carbide drill bits, powder actuated tools and fiber reinforcing materials. The Company markets its products to the residential construction, light industrial and commercial construction, remodeling and do-it-yourself markets. The wood construction products are made of steel and are used to strengthen, support and connect wood joints in residential and commercial construction and DIY projects. The raw material used by the Company is steel, including stainless steel. The Company also uses materials such as carbon fiber, epoxies and acrylics in the manufacture of its chemical anchoring and reinforcing products. The Company purchases raw materials from a variety of commercial sources. The concrete construction products are composed of materials including steel, chemicals and carbon fiber and are used to strengthen, support and connect joints in residential and commercial construction and DIY projects used to repair, protect and strengthen concrete brick or mortar structures. The Company faces competition in all of the markets in which it participates. This competition ranges from subsidiaries of large national or international corporations to small regional manufacturers.