Our employees
Executive management
Alois Portmann
CEO / Owner
+41 41 495 05 20
Technical Management
Roland Waser
+41 41 495 05 20
Office
Silvia Amrein
Administration officer
+41 41 495 05 20
Construction machine operator
Valentin Amrein
Peter Bares
Stephan Felber
Hans Graber
Thomas Künzi
René Ottiger
Stefan Roth
Branimir Sola
Fabio Studer
Michael Tischer