Decorative carbon crystal boards are made mainly from bamboo powder/bamboo charcoal powder, calcium powder, PVC resin and additives, formed by high-temperature, high-pressure extrusion. The surface is laminated with PET high-gloss film, PP scratch-resistant film or water-based PVC film, and can be finished in wood grain, marble grain or fabric textures — used as wall decoration in place of paint, wood veneer or tiles.
Note: it has nothing to do with electrically heated "carbon crystal heating panels", which are a different product. Always confirm whether you are buying a decorative panel or a heating panel.