Contact Did we catch your interest? Do you have further questions, which can be answered better in a telephonic or personal conversation? You can contact us under following email-address: Head office: Untiedt Research GmbH  Denkmalstraße 2  45529 Hattingen, Germany  Tel.: +49 / 2324 / 98 33 91  Fax: +49 / 2324 / 98 33 92  Branch office Hamburg: Untiedt Research GmbH  Holzdamm 51  20099 Hamburg, Germany  Tel.: +49 / 40 / 32 90 87 9-22  Fax: +49 / 40 / 32 90 87 9-19  Our head office is located in the center of the Rhine-Ruhr region, the triangle of cities Düsseldorf, Essen  and Dortmund.