Because the prepainted plate is strictly controlled in the production and manufacturing process, it ensures uniform quality in terms of appearance, durability and process performance. The price of mass-produced color coated plate is cheap, compared with the finished part plating solution, the liquid component in architectural coatings has high water content, low loss of organic chemical architectural coatings, and economic development is cost-effective. The application of prepainted plates greatly simplifies the manufacturing process and does not find air pollution caused by organic chemistry such as lacquering and baking. The types of architectural coatings commonly selected are epoxy resin, polyurethane, silicone-modified material polyurethane, polyvinylidene fluoride, polyurethane material, etc.