PET fiber geogrids are woven by high strength polyester (PET) yarns with various mesh sizes and specifications. Exterior is coated with PVC or nontoxic substance material for UV, acid, and alkali resistance and to prevent the bio-decomposition. specification:20-20,30-30,40-40,50-50,80-80,100-100,50-35,80-50,100-120 elongation:15% Pet fiber geogrid is used for the road basic road surface railway basic dam river and the retaining wall. (1)Roadbed reinforcement of road and railway,crack prevention,increase of roadbed strength;(2)Reinforcement and stabilization of riverside,embankment and side slope(3)Dyke reinforcement on soft ground for stress evenness,sedimentation adjustment,increase of stability and loading capacity of fundus(4)Reinforcement of the surface of road and bridge.