A mold is a model, and products are made according to this model. However, how the mold is produced may not be answered except by mold professionals. Molds have played an irreplaceable role in our lives, including our daily necessities. Most of them are inseparable from molds, such as computers, telephones, fax machines, keyboards, cups, etc. Needless to say, plastic products. In addition, the outer covers of automobiles and motorcycle engines are also made of molds. Just one car can have various parts. More than 20,000 molds are used in various molds. Therefore, the role of molds in modern life is irreplaceable. As long as mass production is carried out, molds are indispensable.