... isolated, enhanced and excellent waterproof (anti-leakage) performance. Bentonite waterproof pad (GCL) is a new type of geosynthetics,after evenly mixing ... sealed, isolated, enhanced and excellent waterproof (anti-leakage) performance.The Pad we provide accords with American Standard,its quality(including bentonite ... ,segregation,anti-leakage,good effect,anti-destructive. Bentonite Waterproof Pad (GCL)