Product Features: 1.It can store water and it is conducive to the growth of vegetation. 2.Good compressive strength. 3.Convenient construction, simple maintenance and economic. 4.Strong load resistance and durability. 5.Ensure that excess water can be quickly drained away. 6.Light weight and strong roof insulation. Technical data sheet: Size: 50cm x 50cm / 40cm x 40cm Height: 20mm, 25mm, 30mm, 50mm Color: white, black, green( customized) Application: 1.Greening project: garage roof greening, roof garden, vertical greening, inclined roof greening, football field, golf course. 2.Municipal engineering: airport, roadbed, subway, tunnel, landfill. 3.Construction engineering: upper or lower floors of the foundation of the building, internal and external walls and floors of the basement as well as the roof, roof seepage prevention and heat insulation layer, etc. 4.Water conservancy project: impervious water in reservoir, reservoir and artificial lake. 5.Transportation engineering: highway, railway embankment, embankment and slope protection layer.