Ralf Heppenstiel

SPIE SAG Group GmbH provides energy distribution and infrastructure development services. The firm’s products and services include power generation, transmission networks, distribution grids, IT solutions, indsutrial solutions, construction solutions and research centers. It specializes in the construction and operation of electrical power, gas, water, telecommunications network systems and facilities. The company was founded in 1916 and is headquartered in Langen, Germany.

Clariant International AG manufactures specialty chemicals. It is involved in the following business areas: Care Chemicals, Natural Resources, Catalysis, and Plastics and Coatings. The company was founded in 1995 and is headquartered in Muttenz, Switzerland.

Part of Outokumpu Oyj, Outokumpu Holding Germany GmbH is a stainless steel manufacturer that offers a range of flat products including cold rolled coil, strip and sheet, precision strips, quarto plate, hot rolled coil, strip and plate. Outokumpu Holding Germany is based in Krefeld, DE. The German company's products are made from austenitic, ferritic, duplex and martensitic grades of stainless steel. Stainless steel is a durable, low-maintenance and corrosion-resistant material that is ideal for creating lasting solutions in demanding applications. Daniel Meßink has been the CEO of the company since 2016.

Part of Aperam SA, APERAM Sourcing SCA is a player in stainless, electrical, and specialty steel, with customers in over 40 countries. The company is based in Luxembourg, Luxembourg. APERAM Sourcing offers a comprehensive range of innovative stainless coils and sheets, tailored to meet every customer's needs. The Luxembourger company's stainless steel products are 100% recyclable and reflect their commitment to being a fair and sustainable company. The company was founded in 2010, and the CEO is Frank Ehrenberg.

Part of Vallourec SA, Vallourec Deutschland GmbH is a German company that manufactures seamless steel tubes and pipes for the oil and gas industries. The company is based in Duesseldorf, Germany. The CEOs are Andreas Schubert, Herbert Schaaff, and Michael Kassing. The private company was founded in 2001 by Max Mannesmann and Reinhard Mannesmann.

Part of ArcelorMittal SA, ArcelorMittal Eisenhüttenstadt GmbH is a steel manufacturing company based in Eisenhuettenstadt, Germany. The German company's website, www.arcelormittal-ieht.com, requires JavaScript activation to access. The company's main focus is on steel production and manufacturing. The CEO of the company is Reiner Blaschek.

Part of Swiss Steel Holding AG, Deutsche Edelstahlwerke Services GmbH is a leading manufacturer of stainless steel long products with over 160 years of experience. The company is based in Witten, Germany. The German company's unique range of products includes tool steels, corrosion-resistant and heat-resistant steels, high-grade construction steels, as well as special materials. The CEOs of the company are Michael Leßmann, Mathias Rist.