History
On 17th of August 1973 Gerhard Rosenberg started the development of his underfloor-heating system in the basement of his one-family-house.
- Founder of the company G. Rosenberg
- 1973 Garage and Basement
- 1974 converted barn, Ennest
- 1975 Uconverted stable, Attendorn
- Industrial area of Biggen about 1950
- 1978 First factory building
- 1980 First extrusion line
- 1981 First Fusiotherm® fittings
- 1985 Extension of the location
- 1990 The headquater
- 1991 Pipe production with 6 extrusion lines
- 1992 Completition of the branch in Radeberg/Saxony
- 1994 Training centre and tool manufacture, Attendorn
- 1995 aquatherm Metall
- 1998 aquatherm branch Carrara/Italy
- 1998 Pipe store Carrara/Italy
