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 |
| VA TECH ELIN EBG GmbH & Co | Emil-Rathenau-Straße 4 | 4030 | Linz | vor 2006 | revocable |
| VOEST-ALPINE AG | voestalpine-Str. 1 | 4020 | Linz | 04.12.1992 | revocable |
| VOEST-ALPINE Montage GesmbH | Dieselstraße 2 | 4600 | Wels | 04.09.1987 | revocable |
| Company Name | Address | Postcode | Place | Awarded on | Type of award |
