Christian Dölle

WBV - Weiss Beteiligungs- und Verwaltungsgesellschaft mbH provides administrative and business services. The private company is based in Haiger, Germany. and has subsidiaries in Germany. The CEO of the German company is Jürgen Grimm.

RHEINZINK GmbH & Co. KG specializes in metal roofing, facade cladding and roof drainage made of titanium zinc. It offers roof systems, such as roof covering and drainage systems, and roof-integrated solar solutions; facade systems, including angled standing seams and tiles; reveal, horizontal, shiplap, and SP-line panels, corrugated and trapezoidal profiles, cassette systems, and semi-finished products, such as sheets and coils for use in roof and facade systems. The company was founded in 1966 and is headquartered in Datteln, Germany.

Vossloh Fastening Systems GmbH manufactures and supplies rail fastening systems. Its products range includes fastening for ballasted tracks and slab tracks for all load profiles from heavy-load to high-speed. The company was founded in 1888 and is headquartered in Werdohl, Germany.