1. If the temperature can't meet the demand, it is necessary to design and install a heating device for the injection mold.2. If the wall thickness of the plastic product is large, and the shrinkage of the plastic product is avoided, it is necessary to design and install a heating device for the injection mold.3. If the molding temperature is higher than the material used, it is necessary to design and install a cooling device for the injection mold.4. In the process of injection molding of thermoplastic materials, it is necessary to design and manufacture a cooling system for the injection mold to shorten the production cycle length, improve the production efficiency and reduce the temperature of the injection mold.