Because geomembrane has good tensile strength, high impact strength, anti-infiltration, acid and alkali resistance, heat resistance, weather resistance, wear resistance and other characteristics, impervious geomembrane in the coastal construction industry has been a lot of applications. It is also widely used in river embankments, reservoirs, diversion tunnels, highways, railways, airports, underground and underwater projects. Geomembrane has become an important material for modern national economic construction. It also introduced the production technology of anti-seepage geomembrane.