The parent-child refrigerated cabinet is a specialized category of commercial refrigeration equipment. Its core consists of an integrally formed main cabinet combined with a sub-cabinet, forming a combined refrigerated cabinet body. It is an integrated refrigeration device designed specifically for the needs of refrigerating multiple product categories in different scenarios. Unlike ordinary single-temperature and single-zone refrigerated cabinets, it focuses on space saving and partitioned storage/display. It is widely used in commercial scenarios such as convenience stores, milk tea shops, bakeries, and small supermarkets, and is also a commonly used equipment by merchants in the beverage, fresh food, and baking industries.