1966Amberg Engineering AGSargans, Switzerland
1983Amberg Engineering AGChur & Zurich, Switzerland
1993Amberg Engineering Brno a.s.Brno,Czech Republic
2002Amberg Infraestructuras SAMadrid, Spain
2002Amberg & TTI Engineering Pte LtdSingapore
2003Amberg Engineering Slovakia, s.r.o.Bratislava, Slovakia
2011Amberg Engineering AGDelhi, India
2013Amberg NorgeOslo-Drammen, Norway
2019Amberg Engineering NyonNyon, Switzerland