1972
Foundation of an installation company for ventilation and air conditioning, Wittenbach 

1979
New building for production and office, Wittenbach

1988
Building up of sector laser technology

1991
Take over of coachwork body metal forming, Saurer Arbon

1992
Foundation of air duct system, Langenthal

1997
Relocation metal technology to Arbon, second development Wittenbach

2003
Foundation of Trunz AG, automotive / take over part production NAW (Daimler Chrysler).
Beginning of development and distribution of Trunz Water Technology

2007
Foundation of Trunz Water Systems AG, Arbon

2009
Foundation of Trunz WS America C.A., Caracas