... Sodium bentonite, PP/PET nonwoven geotextile Sodium bentonite geosynthetic clay liner -GCLGCL has capacity of saving moisture,its water ... not have corrosion and aging phenomena. We manufacture geosynthetic clay liner(GCL),have three layers for needle punchend, upper ... D 5891ml≤18Water ContentDIN 18121(5hrs, 105)%10*Geosynthetic Clay Liner: Mass per unit areaASTM D 5993g/m2≥4500ThicknessASTM ...