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By certification 
Specifications:
* Length: Customized
* Effective width Roof panel: 1000mm
* Materials: Color steel sheet and Polyurethane board(PU)
* Structure: Upper and lower layer: Color steel sheet ; Middle: Polyurethane board
* Thickness: Color steel sheet: 0.3-0.8mm; Polyurethane board: 50mm 75mm 100mm
* Polystyrene density: 40kg/m3
* Conventional color: Red, white, blue, silver.
* Lifetime: 20~30 years
* Characteristic: Low cost ,Low weight, heat insulation, retardant, soundproof, water resistant, environmental ,easy to install
* Application: Various roofs referring to the large size factory buildings, storages, exhibition halls, gymnasiums etc.
Advantage:
* Polyurethane roof using dark nail connection, close the lap board.
* Unique waterproof tank designed to effectively prevent rainwater infiltration and to avoid the phenomenon of cold bridges.
* 40mm wave height, greatly improve the bearing capacity of the roof. Building insulation effect in ensuring that, while customers reduce construction costs, the minimum roof slope of up to 3%.
