The commonly used thermal insulation materials for sandwich panels are: rock wool, polystyrene, polyurethane, etc., which have low thermal conductivity and good thermal insulation effect. Various researches and years of extensive use have proved that the clear lines of the profiled sandwich panels have up to dozens of colors, which can cooperate with the needs of any style mobile home building to achieve a satisfactory effect. The shelf life of the sandwich panels treated with special coating is 10-15 years. In the future, anti-corrosion paint will be sprayed every 10 years, and the life of the plate can reach more than 35 years. The light weight of the color steel sandwich panel can fully reduce the structural load and reduce the structural cost. The device is fast and can be cut at will, which can greatly improve the efficiency and save the construction period. The filling material of the fireproof sandwich panel is non-combustible materials, which can completely meet the requirements of the fire protection regulations.