Please feel free to contact us at the following address.       HP- chemie Pelzer GmbH     Brauckstrasse 51     58454 Witten     P.O.B. 6220 / 58431 Witten     Phone: +49 (0)2302 668-01     Fax: +49 (0)2302 668-119     Email: contact.witten@pelzer.de