The development and production departments are located at:
Jülicher Straße 236
D-52070 Aachen, Germany
Tel.: +49 241 95451312
The organisation of HHF is located at:
Auf dem Anger 29
D-52076 Aachen, Germany
Tel.: +49 2408 9379019 (eventually answering machine)
FAX: +49 2408 9379952
Mail: Info@HHFT.de