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Biaxial geogrid is a mesh structure made of high molecular polymer material. The "biaxial" in its name refers to the fact that it has the same tensile strength in two orthogonal directions. This grid is usually manufactured through an extrusion and stretching process to form a regular mesh structure

Hydrophobic polyurethane grout is a grouting material that does not dissolve or expand excessively after contacting water. Hydrophilic polyurethane grout is a grouting material that expands violently after contacting water.

Waterproof materials refer to a class of materials that can prevent water from penetrating. The basic function of these materials is to form a barrier to prevent water or other liquids from entering a specific space, thereby protecting the environment in the space from the influence of water.