Polyurethane edge-sealed rock wool sandwich board is the best internationally recognized building envelope fire prevention and insulation board. It has low thermal conductivity, good endurance, high bending strength, no water absorption, no decay, no moth bite, good flame retardancy and wide temperature resistance range.

PU Sandwich panel (pu foam sandwich wall panel )is composed of 2 layers of weather-proof colored steel sheets and jetted the hard forms of polyurethane between 2 layers which feature fireproof materials.

It is suitable for the various roofs and walls referring to the large-size factory buildings, storages, exhibition halls, gymnasiums, freezing stores, purifications workshops, etc, which features temp-keeping, heat insulation, weight-bearing, weatherproof with the rich colorfulness and good appearance.