• Quality Management System - DIN EN ISO 9001
• Quality Management System - ISO/TS 16949 – Witten
• Quality Management System - ISO/TS 16949 – Siegen
• Quality Management System - ISO/TS 16949 – Krefeld
• Quality Management System - ISO/TS 16949 – Hagen
• Quality Management System -  ISO 9001:2008, AS9100 Revision C
• Quality Management System - DIN EN ISO 13485 – Krefeld
• Environmental Management System - ISO 14001
• Energy Management System - ISO 50001
• Erneuerbare Energien Gesetz (EEG 2009): §41 Abs. 1 i. V. m. Abs. 2

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