Headquartered in Ferndale, Michigan, ROSS Controls® is an international manufacturer of pneumatic valves, controls systems, and safety products for the fluid power industry. Since being established in 1921, ROSS has always been one of the industry's strongest leaders in pneumatic valve technology. ROSS'​ focus is to continue to be a formidable competitor in key industries where its tailored technology offers customers a distinct value advantage.ROSS has ISO 9000 certified facilities and sales offices located in the United States, Germany, the United Kingdom, and Japan. In addition, ROSS has dedicated sales offices in Brazil, France, India, and China, which are augmented by a worldwide network of 145 stocking distributors for a truly global customer service capability.