| Client name | City | Country |
|---|---|---|
| Braunschweigische Maschinenbauanstalt AG | Braunschweig | Germany |
| Breiing Engineering GmbH | Köln | Germany |
| Brucker | Köln | Germany |
| Bürkert GmbH & Co. KG | Ingelfingen | Germany |
| Bürkert GmbH & Co.KG | München | Germany |
| Bürkert Werke GmbH & Co. KG | Ingelfingen | Germany |
| C.F. Scheer & Cie. GmbH + Co. | Stuttgart | Germany |
| C.H. Zikesch Armaturentechnik GmbH | Essen | Germany |
| CABB GmbH | Gersthofen | Germany |
| CABOT GmbH | Rheinfelden | Germany |
| CAC ENGINEERING GMBH | Chemnitz | Germany |
| Caloric Anlagenbau GmbH | Gräfelfing | Germany |
| CARGILL Deutschland GmbH | Barby | Germany |
| Cargill Deutschland GmbH | Krefeld | Germany |
| Carl Freudenberg | Laudenbach | Germany |
| Carl Lösch Filter GmbH | Kempenich | Germany |
| Cegelec Services GmbH | Leverkusen | Germany |
| Celanese | Hamm | Germany |
| Celanese Production Germany GmbH & Co. KG | Sulzbach (Taunus) | Germany |
| CERA SYSTEM Verschleißschutz GmbH | Mülheim (Ruhr) | Germany |
| CERA SYSTEM Verschleißschutz GmbH | Hermsdorf | Germany |
| Chemische Fabrik Kalk GmbH | Köln | Germany |
| CHOREN Industries GmbH | Freiberg | Germany |
| CHOREN Industrietechnik GmbH | Dresden | Germany |
| Chr. Hansen GmbH | Nienburg | Germany |