Stone thermal insulation composite boards offer soundproofing, moisture-proof, heat-insulating, and frost-proof properties. Consequently, these features significantly surpass the performance characteristics not available in solid boards. Insulation materials: extruded polystyrene, expanded polystyrene, phenolic, aluminum honeycomb panels, cement foamed boards, graphite polystyrene boards, polyurethane, etc. Product composition: decorative layer + insulation layer. Product colors: a variety of stone decorative layers available.