The definition of precision injection molds is determined according to two indicators, one is the precision of the processing equipment, and the other is the error caused by the mold processing. The comprehensive level of an injection molding machine is determined by the weight error of the injection molding machine. The error is less than 0.5% for the precision injection molding machine, the error is less than 0.3% for the ultra-precision machine, and the machine with the error of about 1% is the ordinary injection molding machine. As of the current state of the art, the world's most precise injection molding machine can achieve an error of less than 0.15%.

1. Experience and level of mold R&D designers;

2. The experience and level of the operation technicians;

3. The precision of the mold processing equipment is high. 

In the process of precision injection mold processing, it is necessary to fully consider the shrinkage rate of the plastic, the shape and size of the shape and size of the plastic part, the precision of the mold plastic part, the precision of the mold processing, and the precision requirements of the injection molding machine for the product. All the molds that can be processed can be defined as precision injection molds only if the above two indicators can be achieved.