This directory aims at historical review only and does not claim to provide actual information.
| Company Name | Address | Postcode | Place | Awarded on | Type of award |
| Flextronics International Gesellschaft m.b.H. | Friesacher Straße 3 | 9330 | Althofen | vor 2006 | revocable |
| FM Küchen Gesellschaft m.b.H. | Galgenau 30 | 4240 | Freistadt | 15.12.2009 | revocable |
| Friesacher Maschinenfabrik Hans Springer GesmbH | Hans-Springer-Straße 2 | 9360 | Friesach | 29.07.1983 | revocable |
| Flowserve Control Valves GmbH | Kasernengasse 6 | 9500 | Villach | 30.10.2014 | revocable |
| Fleischmann & Petschnig Dachdeckungs GesmbH & Co KG | Rosentaler Str. 87 | 9020 | Klagenfurt | 18.04.1994 | revocable |
| Friedrich Prause Werkstätten für Innenausbau KG | Waidmannsdorferstrasse 11 | 9020 | Klagenfurt | 04.08.1982 | revocable |
| Company Name | Address | Postcode | Place | Awarded on | Type of award |
