... geogrid structure 3 flexible 4 geogrid extrusion line 5 highway,railway,high slope,greening geogrid extrusion line 1, It is a new excellent ... mining, and architecture and so on.pp civil engineering geogrid extrusion line3, For example, strengthen the basic in highway and railway ... performance and low cost, it has a good market prospect. plastic extruder plastic civil engineering geogrid extrusion line