Geotextile is used becauseLong filament geotextile is made directly by spinning, needle punching and solidifying polyester, with product specifications ranging from80-800g/m2Any choice, it is a geosynthetic material used in geotechnical and civil engineering. It is made by networking and consolidating polyester filaments, and its fibers are arranged into a three-dimensional structure. In addition to having good mechanical properties, it also has good longitudinal and transverse drainage performance, good elongation performance, and high chemical stability such as biological, acid and alkali resistance, and aging resistance. At the same time, it also has a wide range of pore sizes, a tortuous pore distribution, excellent permeability and filtration performance. Filtering of dams and slope protection in hydraulic engineering, isolation and anti-seepage of channels; Basic isolation, filtration, and drainage of highways, railways, and airport runwaysprotectSlope, retaining wall and road reinforcement, drainage; Port Engineering Soft foundation treatment, reinforcement and drainage of beach embankments, harbor docks and breakwaters.