... : Staple fiber needle-punched geotextile is adopted polyester or polypropylene staple fiber by opening, carding, the messy, lapping, ... bursting strength with high mechanical properties.Product Use: Widely used in railways, highways, sports hall, dams, water conservancy construction, ... permeability coefficient (cm / s)0.17Pictures showcase: 100gsm 100% polypropylene needle punched geotextile