china boundary, for arcGIS users, shp file
File list:
bou2_4m
......\bou2_4l.dbf
......\bou2_4l.prj
......\bou2_4l.shp
......\bou2_4l.shp.xml
......\bou2_4l.shx
......\bou2_4p.dbf
......\bou2_4p.prj
......\bou2_4p.shp
......\bou2_4p.shp.xml
......\bou2_4p.shx