... 20mm 3D Geomat (Erosion Control Mat) is a king of 3D structural geosynthetic,which is applied to keep the ... layer with the vegetable,standing the wash-out of the high water level and large speed current. ... ,and block,using in the slope surface protection of roadway,railway,river-way,dyke,and the hillside, ... etc.Specifications of the 3D Geomat (Erosion Control Mat): Item ...