Widely used in large industrial plants, warehouses, stadiums insulation composite sandwich panels, supermarkets, hospitals, cold storage, activity room rockwool composite sandwich panels, building floor, clean shop and the need insulation fire place. Sandwich appearance, gorgeous color, the overall effect, it sets load-bearing scaffold composite sandwich panels, insulation, fire, water in one, and without re-decoration, quick and easy installation, short construction period, comprehensive benefits, and is A versatile, efficient and environmentally friendly building materials with great potential. Installation methods and precautions actual installation of the actual length of the plate, according to the measured length to check the length of the corresponding plate number plates, the plates were cut when needed. Will be raised to the roof plate by plate arrangement start line placement, and width of the sheet covering the alignment mark line start line. And at both ends of the plate length direction of the length of the discharge structure design.