Hans Jürgen Kollwitz Detmold YOUR PARTNER FOR ALL HOUSE TECHNOLOGY We educate : Plant mechanic for sanitary, heating and air conditioning technology, Office clerk How to contact us Hans Jürgen Kollwitz GmbH & Co KG Sanitary technology • Heating technology • Building plumbing • Solar technology Elisabethstr. 69 32756 Detmold Telephone 05231 68695 Fax 05231 65433 Mail HJKollwitz@t-online.de