Drainage Board adopt high-density polyethylene as raw material,using highpressure injection molding process to suppress a hole-shaped lump, with three-dimensional space and certain support height. It is popularly applied in roof greening,subway tunnels,water reservoir seepage,vertical green and many other areas.

Technical Data of Composite Drainage Cell

Composite Drainage Cell Features. 
1.Efficiently removes only excess water.
2.Promotes fast and excellent plant growth.
3.Reduces Urban Flooding.
4.Reduces water contamination by filtering at source.
5.Retains a minimum of approximately 76L/m2 of perched water above the cells.
6.Strong structure can