... away 4.Sample are free 3D geomat for slope protection and erosion control 3D Geomat is a ... soil which have been put into them protection,increase the green area and improve the environment ... asphalt, and block, using in the slope surface protection of roadway, railway, river-way, dyke, and ... Instead of concrete, asphalt, stone and other slope protection material, mainly apply to slope of road, railway ...