History
1995
Gerd Zwiehoff founds the G. Zwiehoff GmbH and – needless to say – distributes the road/rail Unimog

1996
the product range is being extended by a road/rail Sprinter

1998
special customer requests are already being catered to

2000
Unimog-implement-system-partnership by Daimler AG and system implementation U400

2007
major contract comprising 66 Unimogs for Kazakhstan

2010
development of the road/rail electric shunter ROTRAC E2 in cooperation with Linde MH

2011
the ROTRAC RR is being added to the product range

2012
Areceipt of the ÖkoGlobe award for the ROTRAC E2

2013
development of the ROTRAC E4

2014
Stephan Zwiehoff enters into the management of G. Zwiehoff GmbH

2014
service facility in Steinach is being opened

2016
development of Zwiehoff’s own rail guidance system for the Unimog U423

2017
farewell of company founder Gerd Zwiehoff

2019
new workshop in Niedermoosen (south Bavaria) is being opened

2020
obtainment of ECM certification

2021
implementation of environmental management according to ISO 14001

2022
awarding bronze medal at EcoVadis

2023
member of german railway industry association

2024
recertification for Unimog Expert Partner

2024
developement of the ROTRAC E1
