Edgar F. Rappold

Wendt Holding GmbH is a holding company with interests in grinding machines. The compnay and its subsidiaries develop and produce grinding technologies for hard materials, steel, glass, hard metal, ceramic and polycrystalline materials. The company was founded in 1920 and is headquartered in Meerbusch, Germany.

Winterthur Technologie AG is engaged in the manufacture of grinding wheels for industrial applications. The company develops and manufactures grinding tools used in the cutting tool, automotive, turbine, machine tool and steel industries. Its products include vitrified bonded wheels, resin-bonded wheels, cut-off wheels made of composite materials, superabrasive grinding tools, abrasive belts and diamond cluster dressing tools. The three main brands sold by the company are Winterthur, Rappold and SlipNaxos. Winterthur Technologie was founded on December 11, 1998 and is headquartered in Switzerland.