... 1.5mm.2. Advantages: Good flexibility, with the same isolation, drainage, reinforcement, protective functions of geo-textile fabric, and also being ... . 3. Usage:Widely used in dam, traffic tunnel, road, airport, drainage, housing, environmental protection and many other fields for waterproof, reinforcement ... referring to GB/T 17639-2008, GB/T17642-2008 Standard. compound Geomembrane