Mold is a model, according to this model to make products, but how the mold is produced, probably not most of the mold professionals can not answer. The mold has played an irreplaceable role in our lives, our daily necessities Most of them are inseparable from molds, such as computers, telephones, fax machines, keyboards, cups, etc., and the outer covers like cars and motorcycle engines are also made of molds. More than 20,000 molds are used in various molds. Therefore, the role of modern life molds is irreplaceable. As long as mass production is inseparable from molds.