Klaus Rohletter

Dyckerhoff AG engages in the production of cement and ready-mixed concrete products. Its products include dray cement, white cement, and concrete. The company was founded by Wilhelm Gustav Dyckerhoff, Gustav Dyckerhoff, and Rudolf Dyckerhoff on June 4, 1864 and is headquartered in Wiesbaden, Germany.

Süwag Energie AG distributes electricity, natural gas and heat. It offers these products and its related services to both private and corporate clients. The company was founded in 2001 and is headquartered in Frankfurt, Germany.

Part of Bundesverband der Deutschen Volksbanken & Raiffeisenbanken eV, DG IMMOBILIEN MANAGEMENT GmbH is a German company that provides real estate services. The company is based in Frankfurt, Germany. The CEOs are Bernhard Wardel, Martin Fräsdorf. The company was founded in 2004.

DG Anlage GmbH provies real estate services. It offers acquisition, development, leasing, administration, and sale of land and rights equivalent to real property. The company was founded in 1981 and is headquartered in Frankfurt, Germany.

Schmitz Wiedmühle GmbH is a private company based in Neustadt, Germany. The German company specializes in site logistics and the sale of bulk materials such as sand, gravel, lava, basalt, and topsoil. The company also offers boulders made of different types of stone in all sizes. The company was founded in 1950 and is currently led by CEOs Manfred Schmitz and Brigitte Schmitz-Kirschbaum.