PQ Group Holdings Inc. is a leading integrated and innovative global provider of specialty catalysts, chemicals and services. We support customers globally through our strategically located network of manufacturing facilities. We believe that our products, which are predominantly inorganic, and services contribute to improving the sustainability of the environment. We have three uniquely positioned specialty businesses: Refining Services provides sulfuric acid recycling to the North American refining industry; Catalysts serves the packaging and engineering plastics and the global refining, petrochemical and emissions control industries; and Performance Chemicals supplies diverse product end uses, including personal and industrial cleaning products, fuel efficient tires, surface coatings, and food and beverage products. © PQ Corporation