Non-woven geotextiles have many advantages, such as ventilation, filtration, insulation, water absorption, waterproof, retractable, feel good, soft, light, elastic, recoverable, no direction of fabric, high productivity, production speed and low prices. In addition, it also has high tensile strength and tear resistance, good vertical and horizontal drainage, isolation, stability, reinforcement and other functions, as well as excellent permeability and filtration performance.