High-strength geogrid is a three-dimensional meshed structure material made by ultrasonic welding of high-strength polyethylene plastic sheets. It utilizes local materials (sand, gravel, soil, etc.) as filling materials to form a composite material with general structural properties, achieving high load-bearing capacity. It can form stable roadbeds and also be planted with grass to green and stabilize the slope. Our company developed and produced this product in October 2004, and it has been widely used in projects such as the Luozhan Railway in Guangxi, the Jingzhu Expressway, the Jishao Expressway, the Punan Expressway, and the Zanan Expressway.