Approvals by customers

Preferred Supplier of the Bosch Group in the material group Steel[EN]
LISEGA SE - ASME Sec. III - Witten, Siegen, Hagen, Krefeld[DE/EN]
Deutsche Bahn AG -  Witten[EN]
Supplier Approval of the Schaeffler group (FAG, INA und LUK) (For the DEW plant Witten/Krefeld)[EN]
Supplier Approval of the Schaeffler group (For the DEW plant Siegen)[EN]
Formel Q Volkswagen Aktiengesellschaft (DEW plant Siegen)[DE]