hdpe geo-membrane with smooth surface geo-membrane hdpe geo-membrane with smooth surfacegeo-membrane1.Feature: ... liner, slope protection, such as sea cucumber circles). 10Salt (salt crystallization of the pool, thatch brine pool cover, salt membrane ... induction time---------≥207water vapor permeability g · cm(cm2 · s · Pa)≤ 1.0×10 -168-70low-temperature impact embrittlement abilityPass9Black membrane ...