HDPE geomembrane 1,good waterproof, drainage, 2.0.2mm to 2.0mm 3,ASTM standard 4,ISO certificate HDPE geomembraneFlat surface high- ... density polyethylene (HDPE) geomembrane Product survey1Tianhai smooth HDPE geomembrane is produced from high-grade polyethylene ... tank, salt film, plastic tarpaulin cover of salt tank). HDPE geomembrane