geomembrane in astm standard, geomembrane in astm standard ...
composite waterproof geomembrane Composite geomembrane is combined with geotextile and geomembrane composite made of impervious materials, it is mainly used for seepage control, composite geomembrane is divided into a film, a film with one layer nonwoven fabric and two layer fabric wide 4-6m, weight is 200-1500g/m2, the indexes of physical and mechanical tensile and tearing resistance,
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