- Ackermann Holding AG
- Solothurnstrasse 53
- Büren an der Aare
- BE
- CDS GmbH comfort designed solutions
- Melbenackerstrasse 1
- Lüterswil
- SO
- Claudia's Figurstudio GmbH
- Hauptstrasse 19
- Biberist
- SO
- GKT Holding AG
- Witmattstrasse 16
- Grenchen
- SO
- Lumaris Holding AG
- Biberiststrasse 16
- Solothurn
- SO
- Syri GmbH
- Werkhofstrasse 4
- Solothurn
- SO