Frank Teigelkamp

Tigerholm Products AB develops, manufactures and sells products for use in industrial heating, water and sanitation systems. It offers oil de-aerators, oil filters, oil hoses, tool kits, anti siphon valves, floating suction lines, draught regulators and plumbing products. Tigerholm Products was founded in 1971 and is headquartered in Ekerö, Sweden

Dortmunder Energie- und Wasserversorgung GmbH provides energy services including electricity, gas, heat, water, and electric mobility in Dortmund, DE. The company also has a special BVB Stromtarif for Borussia Dortmund fans. The German company offers attractive deals for its customers, including discounts, tickets for exclusive events, and more. The CEOs are Heike Heim and Matthias Klein-Lassek. The company was founded in 1995 and is ultimately controlled by the City of Dortmund.

Part of Medien Union GmbH Ludwigshafen, LGB Grundstücksbesitz GmbH is a company based in Ludwigshafen, Germany. The CEOs of the German company are Thomas Schaub, Ulrich Lingnau, Achim Schröder. LGB Grundstücksbesitz GmbH rents, leases and owns land, buildings and apartments.

Part of E.ON SE, OIE AG distributes electricity and natural gas. The company is based in Idar-Oberstein, Germany. Ulrich Gagneur has been the CEO of the German company since 2013.

Part of Stadt Ratingen Oeffentliche Verwaltung, Stadtwerke Ratingen GmbH is a company that supplies electricity, natural gas, drinking water, and heating. The company is based in Ratingen, Germany. The German company was founded in 1893. The CEO is Friedrich Schnadt.

Part of E.ON SE, Rheinisch-Westfälische Wasserwerksgesellschaft mbH is a German company that supplies water. The company is based in Mulheim an der Ruhr, Germany. The company was founded in 1912. The CEO is Franz Josef Schulte.

Part of E.ON SE, Emscher Lippe Energie GmbH generates and distributes electricity. The company is based in Gelsenkirchen, Germany. The CEOs are Ulrich Köllmann, Bernd-Josef Brunsbach. The German company was founded in 1999.

Dorsten Netz GmbH & Co. KG provides electricity distribution services. The private company is based in Dorsten, Germany. The CEO of the German company is Maria Allnoch.

Part of Fraunhofer-Gesellschaft eV, Fraunhofer-Institut für Umwelt-, Sicherheits- und is a research institute based in Oberhausen, Germany. The German company develops climate-neutral energy systems, resource-efficient processes, and circular products. The company also advises on the transition to sustainability and accompany the change in the energy and raw material system. The company offers support to complete doctorates and encourages the establishment of spin-offs to put developments into practice and market the institute's own technologies. Manufacturers can use their compostable plastics or have plastics made from renewable raw materials certified according to various standards. The company was founded in 1990 by Paul-Michael Weinspach, and Eckhard Weidner has been the CEO of the company since 2004.