2. Mainly used for water conservancy, transportation, tunnels, airports, metallurgical tailings, garbage disposal plants, roofs and other seepage prevention.

3. It is a polymer chemical flexible material with small specific gravity, strong ductility, strong deformation adaptability, corrosion resistance, low temperature resistance and good frost resistance.

4. The main mechanism is to block the leakage passage of the earth dam with the impermeability of plastic film, and to bear the water pressure and adapt to the dam deformation with its great tensile strength and elongation.

5. Two fabrics and one film: The nonwovens used for composite mainly include: polyester staple fiber needled geotextile, polyester long filament spunbonded geotextile, flat filament plastic woven fabric, etc.

6. When combined with plastic film, it not only increases the tensile strength and puncture resistance of plastic film, but also increases the friction coefficient of contact surface due to the rough surface of non-woven fabric, which is beneficial to the stability of composite geomembrane and protective layer.

7. At the same time, it has good corrosion resistance to bacteria and chemical action, and is not afraid of corrosion by acid, alkali and salt.