It adopts medium-high density cotton as core material, galvanized or color-coated plate as surface layer (two layers) and high-strength adhesive. It is heated and pressurized by high-speed continuous automatic molding machine, and is trimmed, slotted and unloaded. A new generation of architectural and decorative panels with thermal insulation and convenient installation. It is a new type of fireproof board with the strongest fire resistance in the same type (sand sandwich panel series).