Application and Optimization Strategies of Circulating Water System in Industrial Plastic Film Production With the continuous development of science and technology, Industrial mould （https://www.kelongmoulds.com/product/industrial-mould/）is increasingly used in various fields. From food packaging to electronic products, from agricultural coverings to building materials, industrial mould have become an indispensable part of modern industrial production because of their lightness, durability, and strong plasticity. However, in the production process of industrial mould, the application and optimization of circulating water systems are of great significance for improving production efficiency, reducing energy consumption, and reducing environmental pollution. In the production process of industrial mould, the cooling system is a crucial link. The circulating water system continuously delivers water to molds, extruders and other equipment to cool high-temperature plastics and solidify them. Through the application of circulating water system, the energy consumption in the production process can be effectively reduced, the cooling efficiency can be improved, and the production speed of industrial mould can be increased. In the industrial mould production process, the cleaning system also requires the support of circulating water. The circulating water system can collect, process and reuse the wastewater generated during the cleaning process, reducing the waste of water resources. In addition, the circulating water system can also effectively remove impurities and residues on the surface of industrial mould and improve product quality.