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High-precision molds refer to the small changes in the size of the molded product, and the product size requirements are strict. The product consistency is good, the finish is high, the structure is complex and durable. These are the basic requirements for precision molds with a tolerance of +-0.001. The consistency is very high, and the molds are often small in size, but the cost is high; it involves optical components, electrical equipment components, and consumer electronics industries.

Precision molds are used in industrial production to obtain various molds and tools for injection molding, blow molding, extrusion, die-casting or forging molding, smelting, and stamping. In short, a mold is a tool used to shape objects. This tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the shape of the article by changing the physical state of the formed material. Known as the "Mother of Industry". The mold with complex structure and process requires many functions to be realized in a small mold volume. For example, computer connectors need to realize the encapsulation and secondary implantation of metal terminal plastic materials on the mold. Or the packaging bottles of daily chemical products, on the basis of multi-cavity common mode to ensure consistency, realize the actions of opening and closing lids and twisting teeth.