Holger Sigmund Management & Projects

c/o Impact Hub Zürich, Viaduktstrasse 93-95 

8005 Zürich, Switzerland

+41 78 785 83 44

mail@holgersigmund.com 

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With myclimate I compensate my carbon dioxide footprint on a yearly basis and I a member of GreenBuzz Chapter Zurich, a global sustainable network.