People Guo Zhengtang peoplepill id: guo-zhengtangGZ 5 views today 8 views this weekGeologistGuo ZhengtangBiographyListsAlso ViewedListsGuo Zhengtang is in following listsBy field of workNotable scientistsGender:MaleBy work and/or countryNotable GeologistsGender:MaleFrom our partnersSponsoredGuo Zhengtang