The mold mainly realizes the processing of the shape of the article through the change of the physical state of the molded material. In products such as automobiles, electronics, instrumentation, home appliances, aerospace, building materials, motors, and communication equipment, 75% of rough-processed industrial product parts, 50% of precision-processed parts, and most plastic products are formed by molds. Therefore, molds are known as the "mother of industry" and are mainly divided into stamping molds, plastic molds, casting molds and forging molds. my country has become the world's largest mold manufacturing and consumer country, and has established a mold industry system. The most concentrated areas of mold production are in the Pearl River Delta and the Yangtze River Delta, where the output value of molds accounts for more than two-thirds of the national output value. Guangdong is now China's most important mold market, and it is also China's largest mold export and import province. Foreign mold developed countries, such as Japan, the United States, Germany, etc., have a history of mold standardization for nearly 100 years. The formulation of mold standards and the production and supply of mold standard parts have formed a complete system.
