This document specifies the product structure identification specifications, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of four-way tensile plastic geogrids. This document is applicable to plastic geogrids with a planar four-direction (longitudinal, transverse, +45° direction, -45° direction) mesh structure made of polypropylene as the main raw material through plastic extrusion, punching, and overall stretching. gate.