The sulphur magnesia is used as the core material, the galvanized or color-coated plate is the top layer (two layers) and the high-strength adhesive, which is heated and pressurized by a high-speed continuous automatic molding machine, and is trimmed, slotted, and unloaded. A new generation of architectural and decorative panels. It has strong fireproof performance, and the water-repellent rate of sulphur-magnesium-magnesium color steel sandwich panel is more than 98%. It does not deform and react with water. The strength of sandwich panel can reach 10m and can withstand two adult pedaling.