... ,High synthetic strenght and professional manufacturer 3,ISO9001 and CE Landfill HDPE geomembrane IntroductionProduct Features:1,It integrates permeation, inverse filter ... ×10-1610Dimensional Stability (%) ±2 ISO9001, ISO14001, OHSAS18001 and CE certification Landfill HDPE geomembrane 1.5-2.5mm,ASTM standard, CE approved