... It is cheaper than hdpe geomembrane Water proof LLDPE geomembrane 1.Feature:Good mechanical properties, high tear strength, flexibility, puncture resistance, ... and salt, pH, anti-corrosion, high temperature-resistant, non-toxic, long service life. water, drainage, anti-seepage, the good ... water vapor permeability (g.cm/cm2.s.Pa)‹1.0 × 10-137Range of operating temperature °C+70 through -70 Water proof ...