Simpson Manufacturing Co., Inc., founded in 1956, is a growing international manufacturer and marketer of building products. Through its subsidiary, Simpson Strong-Tie Company inc., it designs, engineers, and manufactures structural connectors, anchors, and other products for new construction, retrofitting, and do-it-yourself (DIY) markets. Simpson Strong-Tie is the leading structural connector manufacturer in the United States and Europe.
Simpson Manufacturing Co., Inc.
5956 W. Las Positas Boulevard
Pleasanton, CA 94588
SIC Code: 3999