Hot dip galvanized steel coils are commonly used in fields that require high corrosion resistance and strength, such as marine engineering, chemical engineering, shipbuilding, aerospace, etc., due to their excellent anti-corrosion performance and strength. In these fields, hot-dip galvanized steel coils can effectively resist the erosion of materials by harsh environments. Cold dip galvanized steel coils are commonly used in fields such as construction, home appliances, automobiles, and light industry. Although its anti-corrosion performance is not as good as hot-dip galvanized steel coils, its cost is relatively low and it can meet the anti-corrosion requirements in general environments.