Tuowang Polyester filament geotextile is a kind of geosynthetic material used in geotechnical engineering and civil engineering. It is made of polyester filament fiber; through netting and needling consolidation, its fibers are arranged into three-dimensional structures. In addition to good mechanical properties, the product also has good longitudinal and transverse drainage performance, good extensibility and high chemical stability such as biological resistance, acid and alkali resistance and aging resistance. Furthermore, it also has wide range of pore size, tortuous pore distribution, excellent permeability and filtration performance.