Sandwich panels are used in large industrial plants, warehouses, gymnasiums, supermarkets, hospitals, cold storage, mobile homes, buildings plus floors, cleaning workshops and places where insulation and fire prevention are required. The sandwich plate has beautiful appearance, bright color and good overall effect. It combines load bearing, heat preservation, fire and water resistance, and does not require a secondary decoration. It is a versatile, especially in temporary facilities, such as offices, warehouses, walls, etc., on construction sites, but also reflects the civilized construction of modern buildings, especially in terms of rapid installation and use, and has obvious advantages in the indicators of disassembly and recycling. Materials can be installed, and the cost of temporary facilities on construction sites is greatly reduced.