Composite panel of 4mm thickness formed by two brass sheets, both skins of 0,3mm thickness and Alloy CuZn 30 CW505L. The core can be supplied in polyethylene PE or in mineral core fire-rated product. This panel is sold in natural finish. This finish allows to appreciate the ageing of the material and enables the design of singular buildings and decorations. Furthermore, this panel has no treatment being completely natural and will age over time.