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| No. | Firm |
| 1. | BARTEC Hungary Kft. |
| 2. | Controrg Kft. |
| 3. | Controsys Kft. |
| 4. | EasTron Kft. |
| 5. | EL & ME Irányítástechnika Kft. |
| 6. | Emerson Process Management Kft. |
| 7. | Endress+Hauser Irányítástechnika Kft. |
| 8. | Maxicont Kft. |
| 9. | Pepperl+Fuchs Elcon srl. |
| 10. | Phoenix Contact Kft. |
| 11. | PHÕNIX-BRV Kft. |
| 12. | Siemens Rt. |
| 13. | Turck Hungary Kft. |
| 14. | VT Veres Kft. |
| 15. | Weidmüller Kft. |
