... 2. Superior chemical resistance PP (polypropylene)Woven Geotextiles Product Description Woven geotextile mainly uses polypropylene(PP),polyethylene(PE) as raw ... of highway, railway, airport, dam, prevent slope dike, retaining wall, etc. to improve stability.2.Protection: To prevent the ... , the dam, river and coast stone , slope, retaining wall to prevent sand grain through and allow freedom through of ...