... road surface and asphalt surface layer, and prevents damage.2,It is used for rebuilding cement concrete road surface into ... , restrains sedimentation effectively, distributes stress uniformly and improves overall strength of road base.5,It is used for preventing contraction ... ISO9001, ISO14001, OHSAS18001 and CE approved Geogrid of fiberglass with EGA25kn-200kn/m, good anti-corrosive, CE,ISO approved