... : Used in the constructions of highway, railway, airport, dam, prevent slope dike, retaining wall, etc. to improve stability.2.Protection: To ... ,tidal and rain. Used for the projects such as revetment, slope protection and bottom protection, anti-soil erosion,etc.3.Filtration ... filtering layer of dike, the dam, river and coast stone , slope, retaining wall to prevent sand grain through and allow freedom ...