| Dipl. Ing Fierz GmbH | info@fierz-gmbh.ch |
| Industriestrasse 12 | Phone: +41 44 867 51 54 |
| CH-8192 Glattfelden | Fax: +41 44 867 51 55 |
| Headquarters Glattfelden |
| Industriestrasse 12, 8192 Glattfelden |
| Office West |
| Willisauerstrasse 21, 6218 Ettiswil |
| Office East |
| Brühlgasse 28, 9000 St.Gallen |