| Client name | City | Country |
|---|---|---|
| Evonik Industries AG | Marl | Germany |
| Evonik Operations GmbH | Marl | Germany |
| Evonik Operations GmbH | Marl | Germany |
| Evonik Operations GmbH | Niederkassel-Lülsdorf | Germany |
| EVT Energie- und Verfahrenstechnik GmbH | Stuttgart | Germany |
| ExxonMobil Production Deutschland GmbH | Steyerberg | Germany |
| ExxonMobil Production Deutschland GmbH | Großenkneten | Germany |
| ExxonMobil Production Deutschland GmbH | Hannover | Germany |
| F.I.R.S.T. Project & Engineering Support GmbH | Wermelskirchen | Germany |
| Fachhochschule Brandenburg | Brandenburg a.d.Havel | Germany |
| Fachhochschule Jena | Jena | Germany |
| Fachhochschule Köln | Köln | Germany |
| Fachhochschule Lübeck | Lübeck | Germany |
| Feldmühle AG | Baienfurt | Germany |
| Ferrostaal Industrial Projects GmbH | Essen | Germany |
| Ferrostaal Topsoe Projects GmbH | Essen | Germany |
| Fichtner GmbH & Co. KG | Stuttgart | Germany |
| Finze & Wagner EMSR Ingenieurges. mbH | Burghausen | Germany |
| Fisher-Gulde Regelarmaturen GmbH & Co. KG | Ludwigshafen | Germany |
| Flagsol GmbH | Essen | Germany |
| Flowserve Essen GmbH | Essen | Germany |
| Flowserve Flow Control GmbH | Ettlingen | Germany |
| Flowserve Flow Control GmbH | Nettetal | Germany |
| Forschungszentrum Rossendorf e.V. | Dresden | Germany |
| Foxboro Control Valves GmbH | Fellbach-Schmiden | Germany |