The plastic drainage board is made of polystyrene (HIPS) or polyethylene (HDPE) as the raw material of the plastic bottom plate, which is stamped into a conical projection or a stiffened rib (or hollow cylindrical porous). The raw materials have been greatly upgraded and changed. Now it is made of polyvinyl chloride (PVC) as raw material. The compressive strength and overall flatness are greatly improved. The width is 1~3 meters and the length is 4~10 meters or more.

Drain board use：

1. Greening works: garage roof greening, roof garden, vertical greening, inclined roof greening, football field, golf course.

2. Municipal works: airports, roadbeds, subways, tunnels, landfills.

3. Construction: the upper or lower floor of the building foundation, the basement and floor of the basement and the roof, the anti-seepage and insulation of the roof.

4. Water conservancy project: reservoir anti-seepage water, reservoir, artificial lake anti-seepage.

5. Traffic engineering: roads, railway subgrades, dams and slope protection layers.