- HB Facility Service GmbH
- Unterer Kapf 583
- Wienacht-Tobel
- AR
- HBB Biegetechnik AG
- Gütli 166
- Walzenhausen
- AR
- HB-THERM AG
- Zellwegstrasse 32
- Gais
- AR
- HBB Holding AG
- Gütli 166
- Walzenhausen
- AR
- HB Facility Management GmbH
- Unterer Kapf 583
- Wienacht-Tobel
- AR
- HB Swiss Bau & Partner GmbH
- Bahnhofplatz 10
- Herisau
- AR