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Protective effect Reinforced the role of Isolation effect Filter effect 100% polypropylene nonwoven fabric filter materialThe products are used in various types of civil engineering, highways, levees, seawalls.Geotextiles in the role of project: A, filter effects: do dams, canals, coastal, concrete slope, Shen Hedi, retaining walls, etc. filter layer, in preventing soil particles through the same ...