Contact Main office Zurich: KoTrusco Ltd Selnaustrasse 5, P.O. Box 1879 CH-8027 Zurich, Switzerland +41 43 497 25 70 telephone +41 43 497 25 66 telefax René A. Koechli Managing Director +41 43 497 25 65 direct line  +41 78 880 35 50 mobile reko@kotrusco.com Kerstin Koechli +41 43 497 25 67 direct line +41 78 880 30 20 mobile kerstin@kotrusco.com Natalia Semenova +41 43 497 25 71 direct line natalia@kotrusco.com René A. Koechli Office Zug: KoTrusco Ltd Allmendstr. 11 CH-6312 Steinhausen Switzerland +41 41 508 04 00 telephone +41 41 508 04 08 telefax