| ■ | Audi AG | Germany |
| ■ | BBS Kraftfahrzeugtechnik AG | Germany |
| ■ | BMW AG | Germany |
| ■ | Daimler Chrysler AG | Germany |
| ■ | Eurostampa | Italy |
| ■ | Metzeler Automotive Profiles GmbH | Germany |
| ■ | Semperit Gummitechnik Deggendorf GmbH | Germany |
| ■ | Swissair SR Technics | Switzerland |
| ■ | Trumpf GmbH & Co. | Germany |
| ■ | Veritas AG | Germany |
| ■ | Volkswagen AG | Germany |