The model of domestic refrigerator means 1, and the product code of domestic refrigerator is represented by b.2. Usage classification code C, CD, DC: stands for household refrigerator, that is, single-door refrigerator. CD: refers to household refrigeration and freezing refrigerators, that is, refrigerators with two or more doors. D: It means household refrigerator, that is, freezer. 3. Volume is expressed by numbers. 4. Ordinary refrigerators need not be represented, and frost-free refrigerators are represented by W.5.. Improve the design serial number, and the order is represented by capital letters (BBF C is the third improvement of BBF series).

B: product code, and b stands for split household refrigerator (the first letter of the ice character of refrigerator). C: Type code, indicating that the refrigerator is designed with the function of refrigerating room (Tibetan pinyin initials). D: Type code, D indicates that the refrigerator is designed with freezing chamber function (initials of frozen pinyin). 452: Specification code, which is the effective volume of refrigerator, and the unit is liter (L). W: refrigeration mode, where W stands for air-cooled refrigeration (Z stands for direct-cooled refrigeration, and H stands for mixed air-cooled and direct-cooled refrigeration). DPF is defined by the manufacturer, so the standard is not uniform. For example, gold G, white W, each brand has a lot of exclusive designation, which is not universal.