Based on the characteristics of the sheet metal industry, most of the workpieces are divided into several levels. For precision sheet metal industries such as chassis and cabinets, display shelves, and metal shell processing, the thickness is mostly within 3MM. For equipment bases, there are medium thick plates with a thickness of 4-6 mm. There are also some sheet metal processing industries that will expand their thickness to within 25mm in order to expand their business operations. According to production and efficiency requirements, 3000-3000w fiber laser can be selected, with a cutting speed of 17-60 meters per minute for thin carbon steel.