high strength, low permeability, chemical corrosion resistance, ultraviolet & sun ... cut-offs(insulation & separation) geosynthetic material.type: HDPE geomembrane, composite geomembrane Properties:high strength, low permeability, chemical corrosion resistance, ultraviolet & sun ... UV stabilized PE film.Specification & index: contact us. High density polyethylene geomembrane both sides smooth 1mm