Wolfgang Colberg

Evonik Services GmbH is a German company that manufactures and supplies chemicals. The private company is based in Marl, Germany.

STEAG GmbH engages in the planning, development, construction, and operation of power plants and storage facilities. Its services include conventional power generation, energy trading and optimization, district heating, as well as distributed generation. The company was founded in 1937 and is headquartered in Essen, Germany.

Vivawest Wohnen GmbH is a leading real estate company based in NRW, Germany. The private company manages over 120,000 apartments, providing homes for approximately 300,000 people. Uwe Eichner has been the CEO of the company since 2021.

Part of RAG-Stiftung, Vivawest GmbH is a German company that focuses on the development and value enhancement of their properties. The company is based in Gelsenkirchen, Germany. The company manages over 120,000 apartments in NRW, providing homes for approximately 300,000 people. The company offers a repair service to quickly address emergencies and repairs for their tenants. The company was founded in 2006 and is led by CEOs Claudia Goldenbeld and Haluk Serhat. Vivawest was acquired by RAG AG on June 30, 2015.

Part of RAG-Stiftung, THS GmbH is a German company that provides real estate services. The company is based in Gelsenkirchen, Germany.

BSH Hausgeräte GmbH manufactures electrical household appliances. It product portfolio includes stoves, ovens, extractor hoods, dishwashers, washers, dryers, refrigerators, freezers, consumer products such as vacuum cleaners, coffee machines, electric kettles, irons and hairdryers as well as accessories, auxiliary materials and tools. The firm offers its products under the Bosch and Siemens brands as well as other special and regional brands including Gaggenau, Neff, Thermador, Constructa, Viva, Ufesa, Junker, Zelmer, Balay, Pitsos, Profilo and Coldex brand names. The company was founded in 1967 and is headquartered in Munich, Germany.

Chemicainvest Holding BV manufactures polymer intermediates and composite resins. It comprises of 4 assets including Caprolactam, Acrylonitrile, Composite Resins, and Sitech. The company is headquartered in Sittard, the Netherlands.

AMSilk GmbH engages in the production of fiber and biopolymers.It offers implant coating, medical devices for OTC wound care, functional cosmetics, cell biology device kits, biosteel spidersilk fibers and spidersilk research license. It serves the biosteel fibers, medical devices, and cosmetic ingredients industry. The firm's materials are to be applied in numerous fields to improve existing products or to develop materials for completely new applications, which could not be realized until now due to the lack of an appropriate material. The company was founded by Axel H. Leimer, Thomas Scheibel, and Lin Römer in 2008 and is headquartered in Planegg, Germany.

Efficient Energy GmbH develops and produces cooling plants and heat pumps for industrial and home applications. The company uses only water as a coolant and reduces energy consumption to low levels. The company was founded in September 2006 by Holger Sedlak, Oliver Kniffler, and Wolfgang Jacobi and is headquartered in Feldkirchen, Germany.

Dussur provides investment management services and industrial development. It focuses on creating profitable companies and sustainable businesses for the manufacturing, and oil and power sectors. The company was founded in 2014 and is headquartered in Riyadh, Saudi Arabia.

thyssenkrupp Hohenlimburg GmbH is a German company that supplies carbon steel products. The company is based in Hagen, Germany. The CEOs are Andre Matusczyk, Jan Janssen, and Markus Zobel. The private company was founded in 1993.

Part of Fire (BC) Midco Ltd., Fire (BC) Holdco Ltd. functions as an investment holding British company. The company is based in Manchester, UK and was founded in 2018.

Italmatch Chemicals SpA is a holding company, which engages in the production of chemical products various applications. It offers lubricant performance additives, engine and oil additives, advanced water solutions, intermediates, cosmetic grade raw materials, flame retardants, and plastic additives The company was founded by Sergio Iorio in 1997 and is headquartered in Genoa, Italy.