Keystone Fastening Technologies Inc, 409 Parkway View Dr, Pittsburgh, PA 15205, US

Calgon Carbon Corporation, along with its European operation, Chemviron Carbon, is a worldwide manufacturer and supplier of granular activated carbon treatment systems, value-added technologies and services for optimizing production processes and safely purifying the environment. Calgon Carbon is one of the world s largest manufacturers of granular activated carbon with production and operations in North America, Europe and Asia. The company has approximately 20 operational facilities and 27 sales and service centers throughout the world. The company s business units include activated carbon, which includes the production and sale of a variety of granular and powdered activated carbons; engineered systems, which designs, builds and operates systems that utilize carbon adsorption, ultraviolet light or advanced ion exchange separation technologies; service options, which provides reactivation and other carbon-related services; and consumer products, which includes three distinct businesses of carbon cloth, lump charcoal briquettes and new consumer products. Calgon Carbon Corporation has a location in Pittsburgh.