... projects, sealing solution, segregation, anti-leakage, good effect, anti-destructive. GCL category and physical indicators:(According to JG/T 193-2006 ... the Na-bentonite and needle punched together, be signed by GCL-NP. 2) Needle punched and membrane sticked Na-bentonite ... needle punched Na-bentonite geosynthetic clay liner, be signed by GCL-OF.3) Stickiness Na-bentonite geosynthetic clay liner, that ...