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Plastic drainage boards are manufactured by pressing a plastic base sheet made from high-density polyethylene (HDPE) into conical raised platforms or reinforced ribs (or hollow cylindrical porous shapes). Through continuous innovation and research, the material has been greatly improved and transformed. Now, they are made from polyvinyl chloride (PVC), resulting in significantly enhanced compressive strength and overall flatness. The width ranges from 1 to 3 meters, and the length is from 4 to 10 meters or more.

 The top surface of the conical boss is bonded with a layer of filter geotextile to prevent soil particles from passing through, thereby ensuring smooth drainage through the channels. Traditional drainage methods use bricks, tiles, and stones as the filter layer, and a large amount of cobblestone or gravel as the water filter layer, draining water to designated locations. However, using drainage boards instead of cobblestone filter layers for drainage saves time and effort, conserves energy, reduces investment, and also lowers the load on the building.

 A well-designed drainage system plays a crucial role in the construction timeline, the normal use, and the lifespan of structures. The drainage board, along with porous drainage pipes, forms an effective drainage and water dispersion system. The cylindrical drainage boards and geotextiles also constitute a drainage system, thereby creating a system with functions for water infiltration, storage, and drainage.