This product is composited by GCL and Geomembrane​. The water-repellent sodium bentonite is fixed between high-strength geotextiles by needling and then coated with HDPE geomembrane on the non-woven material. This product has stronger waterproof and impermeable ability than ordinary sodium bentonite waterproof blanket.

GCL (Geosynthetics Clay Liner) is a kind of anti-seepage liner, mainly used in environmental engineering waste landfill, underground reservoir, underground infrastructure construction, to solve the problem of sealing, isolation and anti-leakage.