After years of industry experience and independent research, a breakthrough in thinking has been made on the basis of traditional sandwich panels. Selecting high quality color coated steel plate or other metal plates as the panel, fully automatic core material segmentation and transportation equipment, combined with high strength, high adhesion, high fireproof adhesive, bonding of high quality rockwool with metal panel, composite into flat, tough, beautiful building sandwich panel. After molding, the material has excellent characteristics of fire prevention and thermal insulation, which provides an excellent choice for building metal cladding system.