There are many processes to build shelves, which require multiple machinery and multi process partnership, which can last to be the shelf we use. Let's give an example of storage shelves for example. There are many types of roll mills, intelligent high-end machines with all kinds of shelves, and some small workshops or workshops used in ancient old style machinery. Its main purpose is to roll the necessary width steel strip through the mold roll into the desired length with the same section, such as rack column, rack crossbeam and so on.