Engineering Companies / Ingenieurbüros

• Bukovac & Duncan Technology Group, Inc.
• EMERSON Process Management GmbH & CO OHG
• EMERSON Process Management
• JACOBS Engineering Group, Inc.
• LMS Automation GmbH
• P&M Industrie - Anlagenplanung GmbH
• SELCO Engineering, Inc.

Pharmaceutical / Pharmazie

• 3M Deutschland GmbH
• Bayer AG
• Bohringer Ingelheim
• WYETH Medica Ireland

Machine industrie / Maschinenindustrie

• MAN TURBO AG

Chemical / Chemie

• Bakelite AG (now: Hexion)
• Erdölchemie AG (now: BP)
• INEOS Phenol Bedrijf Antwerpen
• Rütgers AG
• Technochemie AG (now: Evonik)
• Vintron GmbH (now:Vinnolit)