Color-coated coils undergo surface pretreatment (degreasing and chemical treatment) on hot-rolled substrates, galvanized substrates, galvanized substrates, cold-rolled substrates, tin-plated substrates, stainless steel substrates, etc., and are coated with roller coating. One or more layers of liquid paint are applied, and the plate obtained after baking and cooling is a coated steel plate, which is made into a color-coated coil plate. It is mainly used in building roofs, walls, steel structure workshops, home appliance panels, and purification and cleaning Factories and other fields.