First of all, look at the packaging: the real Ma Yue locks the portrait of the inventor Li Shande, with clear words and exquisite packaging, while the fake Ma Yue is gray in color, fuzzy in font and inferior in appearance. Second, see if the design trademark of the key handle is the same as the packaging trademark, and vice versa. Third, open the security label to see if there is a phone number. Fourth, the real Ma Yue's key teeth are dull and smooth, which does not hurt people. The key teeth of the fake Ma Yue are sharp and rough, the key is too big, and the lock is loose and shaking. Fifth, the shrapnel in the keyhole of the real Ma Yue is white and shiny. The shrapnel in the keyhole of the fake Ma Yue was not electroplated, and it rusted yellow or blue. Consumers should carefully identify when buying and selling Ma Yue locks. If you have any questions, you can also consult the manufacturer directly. Instructions for use of anti-counterfeiting label: scrape off the surface of anti-counterfeiting code, dial the telephone number provided on the surface, and enter the scraped anti-counterfeiting code according to the voice prompt (note: if the telephone number on the surface starts with 800, please dial it with a fixed telephone, not a mobile phone or PHS, and if it starts with 400, you can dial it with a fixed telephone, PHS or mobile phone).