Cold water machine used in plastics processing machinery and molds to cool, can greatly improve the plastics surface finish, which reduce internal stress of plastic products surface pattern trace and so that products do not shrink or deform, and facilitate the release of plastic products, speed up product training, so as to greatly improve the productivity of plastic molding machine. Chiller applications in computer numerical control machine tools, jig boring machines, grinding machines, machining centers, modular machine tool lubrication and hydraulic systems and all kinds of precision machine tools spindle cooling of the transmission medium, can accurately control the temperature of oil, effective reduction of thermal deformation of machine tools, improve the accuracy of machine tool. Industrial chillers typically come as complete packaged closed-loop systems, including water chiller, condenser and the circulation pump, expansion valve, no flow shut off internal cooling water tank temperature control station.