Manufacturer, 2 layers or multi-layers at request. Size: 2-6m, length is 50-100m 1.Materials: geomembrane,geotextile2. Property: Flexibility is good, exception of a geotextile's isolation, drainage, reinforced, protective functions, but also has closed( impermeable) function.3. Usuage: Widely used in dam, traffic tunnel, road, airport, drainage, housing, environmental protection and many other ...