
Diethelm Keller Holding Ltd.Mühlebachstrasse 20 CH-8008 Zurich
Switzerland Postal address: P.O. Box 1824 CH-8032 Zurich
T +41 44 265 33 00 F +41 44 265 33 99 www.diethelmkeller.com
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Diethelm Travel Asia Ltd12th Floor, 140/1 Kian Gwan Building II
Wireless Road Lumpinee, Pathumwan Bangkok 10330
Thailand
T +66 2 251 53 98 or +66 2 256 02 20 2 F +66 2 251 53 05
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