... kind of light-weight building material. 1)Polyurethane Sandwich Panel or heat preserving decorating metal board is a new kind ... durable, energy efficient, environment friendly. Etc.4).Patterns. fine brick-texture, coarse brick texture, stone texture, mosaic texture, water wave texture, tile ... .constrution: we have our own fittings system to fix the panel.First ,fix the keel on the wall surface and then ...