- In 1974 the family owned company “Roßmann Electronic GmbH” was founded by Horst Recktenwald. He has been the managing Director from the very first beginning.
- In 1986 the company moved from Windach to Dießen-Riederau.
- Roßmann has been certified according to DIN EN ISO 9001 since July 1998. (current certificate DIN EN ISO 9001:2015)
- Since 2009 Susanne Recktenwald, the daughter of Horst Recktenwald, has joined him in the management.
- In 2010 the company moved from Riederau to Dießen am Ammersee. (about 55 km south west of Munich)