After securing both ends of the fasteners, and then install the second plate mounted to the first order from the left (right) to the right (left) how much foam sandwich panels, rear bottom-up. Discharge line installation to the next mark point, review bias plate installed when fully meet the design requirements of the fastening plate. When not meet the requirements, it should align the foam sandwich panel manufacturers in the next paragraph mark, when the adjustable positive sign in this section, you can adjust this paragraph mark after full tightening. Followed by installation in full swing. After the installation of the roof should be checked whether the omission fastening point. Color trends First, the use of high-quality substrates, for the substrate surface, shape and dimensional accuracy requirements are higher and higher, outdoor use, such as small spangle flat galvanized steel coil, galvanized spangle-free smooth Coil timely under the rise of hot-dip zinc alloy volumes; for indoor use, such as galvanized steel coils, cold-rolled plates and aluminum foil roll. Second foam sandwich panels, improved pretreatment and pretreatment solution, a small number of devices, low cost foam sandwich technology into the mainstream prices continue to improve stability, corrosion resistance, environmental performance pretreatment solution. Third, pay attention to the development of new coatings for general polyester, polyvinylidene fluoride (PVDF) and plastisol make improvements, achieve superior color reproducibility, anti-UV, anti-dioxane