Storage and drainage board is made of polyethylene plastic injection molding,which have integrates drainage and storage functions. can drainage overmuch water and keep enough water for greening. Combined with geotextiles, it can avoid the blockage of water storage tank and drainage channel by fine-grained matrix, maintain smooth drainage and air circulation, and form a complete and new storage and drainage system, which is widely used in urban landscape engineering. Manin features: √ Water storage and drainage-Construction a drainage channel and water storage dimple with a certain three-dimensional spatial support. √ Big load capacity- It is made of polymer materials, the anti-pression strength is more than 400kpa at most. √ Water guiding function- the size of the gap between the protrusions of the drainage board determines the drainage capacity and the thickness of the air layer. Membrane and shell continuously form an independen…