The plastic drainage board is made by pressing the plastic base plate made of polystyrene (HIPS) or polyethylene (HDPE) into conical domes or reinforced ribs (or hollow cylindrical porous) through stamping. Through continuous innovation and research and development, the raw material has undergone significant improvement and transformation, and is now produced using (), which has greatly enhanced its compressive strength and overall flatness. The width ranges from 1 to 3 meters, and the length is 4 to 10 meters or more.