... 4)Thickness:10~20mm 5)Material:HDPE High Strength 3D Geomat is a kind of 3D structural geosynthetic,which is applied to keep ... layer with the vegetable,standing the wash-out of the high water level and large speed current.3.Replace the concrete,asphalt ... protection of roadway,railway,river-way,dyke,and the hillside,etc.Specification of the 3D Geomat: Item SpecEM2EM3EM4EM5Weight per sq.m. ≥(g ...