Andreas Hader

VTN Wilthen GmbH is a German traditional company that has been providing high-quality, safe, and efficient services since 1958. The private company is based in Wilthen bei Kirschau, Germany. The company offers a wide range of services, from the smallest screw to the largest landing gear of passenger planes. The company belongs to the VTN group since 1993 and offer modern and innovative services. The company specializes in the machine industry, where they provide various processes such as hardening, induction hardening, and nitriding of shafts. The CEOs of the company are Georg Niessen and Andreas Hader.

Part of IHI Corp., VTN Fritz Düsseldorf GmbH is a company based in Freiburg, Germany. The CEOs of the German company are Georg Niessen, Andreas Hader. VTN Fritz Düsseldorf GmbH provides surface finishing and heat treatment services.

VTN Witten GmbH develops industrial heat treatment systems. The firm develops systems for metal processing, manufacturing, and plant management applications. Its services include heat treatment, finishing, quality assurance, technical advice, and research and development. The company was founded in 1972 and is headquartered in Witten, Germany.