With roots reaching back to 1815, PQ Corporation manufactures silicates, specialty silicas, zeolites and related performance chemicals for industrial and everyday products. From Malvern, Pennsylvania, the company operates 31 manufacturing facilities across 13 countries, employs more than 1,500 people and serves over 900 customers worldwide. Its materials help support applications ranging from cleaner drinking water and fuel-efficient tires to paints, toothpaste and biofuels.
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Tosoh USA, IncEstablished in New York in 1964 as Tosoh Corporation’s first U.S. representative office, Tosoh USA now operates from Grove City as the corporation’s North American sales, marketing, and business-development center. The company markets chemical products made by Tosoh Corporation and its affiliates, including materials such as silica glass, organic chemicals, and specialty polymers that support a wide range of everyday goods. Its portfolio also includes advanced zirconia materials, with Tosoh’s parent corporation described as having the world’s largest zirconia powder production capacity.GROVE CITY, OH
W. R. Grace & Co.-ConnFor more than 165 years, W. R. Grace & Co.-Conn. has built its name around chemistry-driven manufacturing, with a global workforce and operations spanning every continent. The company develops specialty materials for industrial customers, while its Aiken plant—established in 1941 and acquired by Grace in 1980—mines and packages kaolin used in petroleum catalysts and concrete.COLUMBIA, MD
SI GroupWith roots in varnish and rubber dating to the 1890s, SI Group has spent more than a century developing chemistry for industrial manufacturers. Today, its approximately 1,500 employees work across 18 manufacturing sites to supply performance additives and related chemical solutions to customers in more than 80 countries.SCHENECTADY, NY