Imprint by OneStone Consulting Ltd.

OneStone Consulting Ltd.
Business Park Varna, Building 8, Floor 4
9009 Varna, Bulgaria

Phone: +359 5280 5370
E-Mail: harder(at)

Managing Member: Dr.-Ing. Joachim Harder
 UIC/PIC number: 205573301
EU VAT Registr. No.: to be announced

Copyright © All rights reserved. All text, images, charts, animations and their arrangement on this website are protected by copyright and other protective laws. The content of this website must not be copied, distributed, altered, or made available to third parties for commercial purposes. Some website pages also contain images copyrighted by third parties.

We may provide links to third-party websites. OneStone Consulting has no responsibility for these websites, which are governed by the respective terms of use and privacy policies of these third-party providers.

Onestone is a registered trademark under EUTM 016647182, by One Stone BV, Belgium, with licensing of seniority by OneStone Consulting (DE 39654020, 3/12/1996 and under WIPO 674594, 2/5/1997).

OneStone Consulting Ltd. is an Associate Corporate Member of The World Cement Association, based in London, UK.
OneStone Consulting Ltd. is a Dun & Bradstreet D-U-N-S® Registered™ business. Our D&B no. is 524419365.

Webdesign and Implementation by Harder Webconsult – Marian Harder, based in Hamburg, Germany.