| Client name | City | Country |
|---|---|---|
| SABIC Polyolefine GmbH | Gelsenkirchen | Germany |
| SAG Erwin Peters GmbH | Garbsen | Germany |
| SALUS Haus GmbH & Co. KG | Brückmühl | Germany |
| SAMSON AG | Hamburg | Germany |
| Samson AG | Lörrach | Germany |
| SAMSON AG | Frankfurt am Main | Germany |
| Sasol Germany GmbH | Hamburg | Germany |
| Sasol Germany GmbH | Brunsbüttel | Germany |
| Sasol Wax GmbH | Hamburg | Germany |
| Schmitz & Schulte GmbH & Co. KG | Burscheid | Germany |
| Schoppe & Faeser GmbH | Minden | Germany |
| Schott AG | Mitterteich | Germany |
| SCHROEDAHL GmbH | Reichshof-Mittelagger | Germany |
| Schubert & Salzer Control Systems GmbH | Ingolstadt | Germany |
| Schütz engineering PLT GmbH | Wadgassen | Germany |
| Severn A-T Armaturen GmbH | Oberhausen | Germany |
| Shell & DEA Oil GmbH | Hamburg | Germany |
| Shell & DEA Oil GmbH | Hamburg | Germany |
| Shell Deutschland Oil GmbH | Wesseling | Germany |
| Shell Deutschland Oil GmbH | Köln | Germany |
| SICK AG | Reute | Germany |
| Siegfried PharmaChemikalien Minden GmbH | Minden | Germany |
| Siemens AG | Offenbach | Germany |
| Siemens AG | Mülheim a. d. Ruhr | Germany |
| Siemens AG | Mannheim | Germany |
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