Williams Controls is the world leader in Electronic Throttle Controls for heavy duty trucks and commercial vehicles. We work in partnership with our OEM customers to provide custom designs for specific applications. Williams Controls also offers adjustable pedal systems for the truck, bus and RV markets. In addition, we provide a vast selection of standard designs available for many vehicle applications. Norman C. Williams founded Williams Controls, Inc. in 1937 in Portland, Oregon. The first of his many inventions was a vacuum water valve designed to cool the brake drums of logging trucks and trailers. In the years following, Williams expanded the company's product line to include various other pneumatic devices, such as exhaust braking systems and air brake controls. In 1962 Williams Controls introduced its first pneumatic throttle control system that was designed to replace long, complex mechanical linkages. Williams pneumatic-controlled throttle assemblies then became standard in the domestic bus market. Williams Controls expanded this product line, developing a hydraulic throttle control system for heavy off-highway equipment. In the 1970's Norm Williams sold his interest in the company and it was taken public in 1989. The Williams Controls company trades under the symbol WMCO. In the mid-'80s, Detroit Diesel introduced the first electronically controlled diesel engine with increased efficiency and lower emissions. Williams, working closely with both engine and vehicle manufacturers, designed the electronic throttle control for heavy duty trucks and commercial vehicles in 1987. The company quickly became the world leader in the design and manufacture of electronic throttle controls for trucks and buses. In the '90s Williams Controls continued its market leadership in electronic throttle controls for trucks and buses. Williams also quickly moved to a leadership position in off-road markets with major construction equipment makers adopting Williams Controls electronic throttle controls. In 2003 Williams licensed automotive adjustable pedal technology. This enables Williams to offer complete adjustable pedal systems to its customers in the medium and heavy vehicle markets. Williams Controls began producing sensors for it throttle controls systems in 2005. This allows Williams to quickly respond to customer design requests with the most advanced, cost effective and reliable technology available. In 2005 Williams Controls opened strategic sales and customer service centers in Munich, Germany and Shanghai, China to pursue the growth opportunities in these significant markets for our products. Williams Controls opened a state of the art 40,000 square foot manufacturing facility in Suzhou, China to support its Chinese customer base, globalize its sourcing activities and respond to customer requests for emerging market manufacturing.