Global Spatial Data Infrastructure Association (GSDI) http://www.gsdi.org/

    International Organization for Standardization (ISO) http://www.iso.org/

    Open Geospatial Consortium (OGC) http://www.opengeospatial.org/

    American Society for Photogrammetry & Remote Sensing (ASPRS) http://www.asprs.org/

    Permanent Committee on GIS Infrastructure for Asia & the Pacific (PCGIAP) http://www.gsi.go.jp/PCGIAP/

    International Cartographic Association (ICA) http://cartography.tuwien.ac.at/ica/

    International Geographical Union (IGU) http://w ww.igu-net.org/

           National Geomatics Center of China  http://ngcc.sbsm.gov.cn