Engineering |
| Swissfeed AG | Bremgartenstrasse 13 | CH-5624 Bünzen | Tel. 056 619 73 00 |
| Auto Meter AG | Grabenhofstrasse 3 | CH-6010 Kriens | Tel. 041 349 40 50 |
| Polytechnik AG | Kasernenplatz 2 | CH-6000 Luzern 7 | Tel. 041 784 10 40 |
| wbi AG | Brünigstrasse 18 | CH-6005 Luzern | Tel. 041 368 10 50 |
| Airclean Engineering AG | Quellenweg 1 | CH-5616 Meisterschwanden | Tel. 056 667 94 14 |
| Bärtsch + Messerli AG | Industriestrasse 14 | CH-5036 Oberentfelden | Tel. 062 737 20 60 |
| Ralog Engineering | Titlisstrasse 16 | CH-4665 Oftringen | Tel. 062 752 01 10 |
| Noser Engineering AG | Talackerstrasse 99 | CH-8404 Winterthur | Tel. 052 234 56 11 |