Volker Hagen CEO CSI Group volker.hagen@csi-business.hk
Petra Hagen Management CSI DE petra.hagen@csi-business.de
Sidonia Lin Management CSI GZ sidonia.lin@csi-business.cn
Susie Luo Management CSI NB susie.luo@csi-business.cn
You may write an eMail to anyone of us in English, German or Chinese language. We are looking forward to it!