Steel-plastic Complex Geogrid is made of high tensile steel-wire mixed with PE and other assistants. They become high tensile strength bands after special handling, and there are rough embossing on the surface. Then the vertical and horizontal strips knit according to certain spaces by ultrasonic welding. The products are applied widely on railway, bridge, dock, retaining wall, dam to reinforce the soft soil and to resist the road surface’s cracks.