Simpson Manufacturing Co., Inc. through its subsidiary, Simpson Strong-Tie Company Inc. (SST), designs, engineers and manufactures wood construction products, including connectors, truss plates, fastening systems and lateral systems used in light-frame construction. It also offers concrete construction products used for concrete, masonry, steel and for concrete repair, protection and strengthening, including adhesives, chemicals, mechanical anchors, carbide drill bits, powder actuated tools and fiber reinforced materials. It operates in three segments: North America, Europe and Asia/Pacific. The North America segment includes operations in the United States and Canada. The Europe segment includes operations in France, the United Kingdom, Germany, Denmark, Switzerland, Portugal and Poland. The Asia/Pacific segment includes operations in China, Hong Kong, Thailand, Australia, New Zealand, South Africa and the Middle East. Its segments sell both wood and concrete construction products.