PP sheet 100% pp Application:insulation, non-viscous,reinforcement,drainage,filtrate Color: White, blue, multi-colors, as ... treated. Application of PP WOVEN FABRICInsulation:Insulation between different material,such as between roadbed and foundation of railway Filtrate: ... keep from earth and solidReinforcement:Used on the soft foundation,such as railway,airportway,landfill,palyfround to prevent broken ...