Detrex Corporation provides polyvinyl chloride and chlorinated polyvinyl chloride pipe, duct, fittings, shapes and specialty extrusions, lubricant additives, high purity hydrochloric acid and chemicals. Detrex s customers include manufacturers of automobiles, lubricants, farm implements, appliances and ordinance materials, as well as computers, telecommunications, aerospace and optical products, and the commercial and industrial construction industries. The company is comprised of a number of operations that include Harvel Plastics, a manufacturer of PVC/CPVC extrusions, and the Elco Corporation, a manufacturer of specialty chemicals. In 1920, Detrex was established as a manufacturer of alkaline cleaners. The publicly held company is headquartered in Southfield, Mich. Detrex Corporation has manufacturing locations in Easton, Pa., and Bakersfield, Calif.