... request) 4) Material: PP / PET 5) Color: Black,white,grey 6) Certification: ISO9001-2008,CE 7) Manufacturing method: nonwoven(short ... of the dykes, river canal, seacoast, concrete slope, retaining walls. At the same time of preventing the clay granule ... railway, soil-stone dam, breakwater, airport, backfill soil of retaining wall, slope protection, etc in which distributes the earth stress, prevents ...