Hans Peter Ingenillem

Chiyoda Ute Co., Ltd. engages in the manufacture and sale of building interior materials. It operates through the Gypsum Board and Others divisions. The Gypsum Board division produces, sells, and transports gypsum boards. The Others division markets non-gypsum board products. The company was founded by Tomihisa Hirata on January 17, 1948 and is headquartered in Mie, Japan.

Knauf GmbH manufactures and sells construction materials and systems for interior work. It supplies building materials and systems for interior work such as plaster board, metal sections and fillers to private and commercial customers. The company was founded in 1970 and is headquartered in Weissenbach, Austria

Gebr. Knauf KG operates as a holding company, which engages in the production of gypsum and gypsum-related products, insulation and soundproofing materials, as well as cardboards for the manufacture of plasterboards. It also specializes in the development and production of machines for the processing of plasters for indoor and outdoor use. The company was founded on December 6, 1972 and is headquartered in Iphofen, Germany.

Knauf Gips KG provides building materials and construction systems. It offers conventional gypsum, construction materials for drywall construction, plasterboard, mineral fiber acoustic board, dry mortar with gypsum for internal plaster and cement-based external plaster and insulating materials on the basis auf glass wool and mineral wool. The company was founded by Alfons Knauf and Karl Knauf in 1932 and is headquartered in Iphofen, Germany.