| Firma | Ort | Kategorie |
|---|---|---|
| UAS UNITED AIR SPECIALISTS | Bad Camberg | |
| Vaihinger | Bad Camberg | |
| Drache Umwelttechnik | Diez | |
| EMW filtertechnik | Diez | |
| Krautzberger | Eltville | |
| KS Lüftungstechnik | Eltville | |
| Ferrostaal Oil & Gas | Geisenheim | |
| Topcon Electronics | Geisenheim | |
| Wachendorff Automation | Geisenheim | |
| Motec | Hadamar | |
| Strulik | Hünfelden | |
| KLINGER | Idstein | |
| Lemacher Hydraulik | Idstein | |
| Bolder automation | Limburg | |
| Harmonic Drive | Limburg | |
| HYDROTECHNIK | Limburg | |
| De Dietrich Process Systems GmbH | Mainz | |
| Lino | Mainz | |
| MDI Advanced Processing | Mainz | |
| Micromotion | Mainz | |
| GE Carbon Capture | Mainz-Kastel | |
| H+M Hubtechnik | Taunusstein | |
| FEHLINGS AUTOMATION | Walluf | |
| FLSmidth Wiesbaden | Walluf | |
| MERViSOFT | Wiesbaden | |
| PCM Deutschland | Wiesbaden | |
| Rheinhütte Pumpen GmbH | Wiesbaden | |
| VITRONIC Dr.-Ing. Stein | Wiesbaden |