1. Every Haier refrigerator manufactured after 2004 has a barcode related to the refrigerator on the back of the refrigerator. Generally, the barcode is 5 pages. The top barcode is not easy to tear off, and the other four bars are easy. The last 6 digits of the torn off barcode indicate the year, month and day of manufacture respectively. Check to see if it is a refrigerator that has just left the factory. For example, the last 9 digits of the serial number are BC74K6412, so the year and month of this refrigerator is April 20, 2007.

2. Remove the lampshade inside the refrigerator and check whether there is a HAIER mark inside the lampshade; or open the refrigerator door wide and check whether there is a barcode on the underside of the door and whether the model on the barcode is consistent with the refrigerator; use a screwdriver to remove the rear of the refrigerator. Remove the control box cover and check whether there is a HAIER logo on the computer board on the refrigerator.

3. If you buy the machine from a store, the above two points are generally enough to prove whether it is a Haier refrigerator. For second-hand refrigerators, in addition to the above two points, you must also check whether the model on the invoice is consistent with the actual product. There are two types of barcodes on the back of the refrigerator. One starts with a number and has 24 digits. The other starts with a letter and has 24 digits. ***There are 20 digits. All refrigerators shipped after 2004 have been changed to 20-digit numbers. If the number on the barcode is still 24 digits, it must be a counterfeit.