Cold-rolled steel sheets are thin steel sheets produced through the cold-rolling process, characterized by a smooth surface, precise dimensions, and high strength. They are widely used in industries such as automotive, home appliances, and electronics. Their thickness typically ranges from 0.2 to 4.0 mm. After annealing treatment, they exhibit excellent stamping performance and are suitable for precision stamped parts, housing structures, and other applications. Common grades include SPCC, DC01, and Q235B, which are more refined than hot-rolled steel sheets but come at a higher cost.