Klaus-Peter Hennig

Hüttenhospital gemeinnützige GmbH operates general hospitals. The company is headquartered in Dortmund, Germany.

AST Deutschland GmbH manufactures and markets specialty steel products. It also manufactures and markets flat-rolled stainless steel and nickel-base alloys for ThyssenKrupp. Its products include stainless steel flat products, nickel-base alloys and titanium. The firm has operations, production plants and subsidiaries in Asia, Europe and North America. The company was founded in 1997 and is headquartered in Essen, Germany.

ThyssenKrupp Nirosta GmbH manufactures and markets steel products. It manufactures stainless flat products with a portfolio of grades, sizes and finishes. Its products are sold under the Nirosta and Thermax brands. The company's products are used in buildings, household appliances and food processing machinery and by the automotive, transportation, chemicals and energy industries. Formed in 1995, the company is headquartered in Krefeld, Germany.