The production of refrigerators and freezers has extremely strict requirements for the foaming effect of polyurethane. There are high process requirements for material temperature, flow rate, material ratio, mixing effect, and the design of mixing heads. It is one of the application fields with high technical requirements in the polyurethane foaming process. Chengdu Dongri Ruimu Machinery Co., Ltd. has been committed to providing complete equipment solutions for refrigerator and freezer manufacturers for over 20 years. It has provided personalized, advanced, and reliable production systems for the refrigerator and home appliance industry, including the design, planning and layout of the entire factory production line, mold manufacturing, and the research, development, and manufacturing of supporting equipment. The foaming system, premixing system, and storage system achieve efficient cooperation between the dry and wet parts, ensuring customer production requirements are met. Over the years, it has provided corresponding services for domestic and foreign refrigerator and freezer brands, and its quality and brand have been widely recognized in the market.