Color coated steel coil (PPGI)is a product made of cold-rolled steel coil and (aluminum) galvanized steel coil after surface chemical treatment, coating (roll coating) or composite organic film (PVC film, etc.),and then baking and curing. This product is produced by the manufacturer in coils on the continuous production line, so it is also called prepainted steel coil. It not only has the properties of high mechanical strength and easy forming of steel materials, but also has good decoration and corrosion resistance of coating materials.