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 |
| Rhomberg Steinbruch Gesellschaft m.b.H. & Co. OG | Mariahilfstraße 29 | 6900 | Bregenz | 04.06.1985 | revocable |
| Rieger-Orgelbau Dipl.Ing.Josef Glatter-Götz GesmbH KG | Hofsteigstraße 120 | 6858 | Schwarzach | 06.06.1988 | revocable |
| Respo - Bekleidungswerkm Alleininh. Rudolf Zierhut jun. | Gmünderstrasse 229 | 3970 | Weitra | 19.12.1972 | revocable |
| Röfix Wehinger Baustoffwerk Gesellschaft m.b.H. | Badstraße 23 | 6832 | Röthis | 31.05.1988 | revocable |
| Company Name | Address | Postcode | Place | Awarded on | Type of award |
