Galvanized roof sheets has the advantages of both organic polymers and steel plates. It not only has good colorability, formability, corrosion resistance, and decorative properties of organic polymers, but also has high strength and ease of processing of steel plates. It can be easily Blanking, bending, deep drawing, welding and other processing. This makes the products made of organic coated steel sheets have excellent practicability, decoration, processability and durability.