Plastic drainage panels are made by molding a plastic base sheet, either from polystyrene (HIPS) or polyethylene (HDPE), into conical bosses or reinforced ribs (or hollow cylindrical porous shapes) through stamping. Through continuous innovation and R&D, the raw materials have undergone significant improvements and changes, now produced using polyvinyl chloride (PVC). This has greatly enhanced the compressive strength and overall flatness. The width ranges from 1 to 3 meters, and the length is 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 the smooth drainage of the channels. Traditional drainage methods employ bricks, tiles, and blocks as the filter layer, using a substantial amount of cobblestone or gravel as the water filter layer, and draining water away. However, replacing the cobblestone filter layer with a drainage board 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 and the normal use and lifespan of structures. The drainage board, in conjunction with porous drainage pipes, forms an effective drainage and water dispersion system. The cylindrical drainage board, along with geotextile, also forms a drainage system, thereby creating a system with functions for water infiltration, storage, and drainage.