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 |
| P. Dussmann Gesellschaft m.b.H. | Gruberstraße 2-4 | 4020 | Linz | 07.01.1998 | revocable |
| Para Metallfertigbauteile GesmbH | Haid 25 | 4870 | Vöcklamarkt | 26.11.1982 | revocable |
| Pfeiffer GroßhandelsgmbH | Egger-Lienz-Straße 14 | 4050 | Traun | 24.10.1989 | revocable |
| Poloplast Kunststoffwerk der Eternit-Werke Ludwig Hatschek und der Durit-Werke Kern & Co OHG | Poloplaststr. 1 | 4060 | Leonding | 06.08.1973 | revocable |
| Poschacher Natursteinwerke GmbH | Poschacherstraße 7 | 4222 | Langenstein | 01.06.1989 | revocable |
| Company Name | Address | Postcode | Place | Awarded on | Type of award |
