1, positioning bronzing: an oval gold positioning foil film is printed on the lower left of the back of the outer packaging of LeTV products, which can clearly identify the word "LeEco". This positioning hot stamping is extremely difficult to imitate, and only a few manufacturers in the world can provide qualified hot stamping films.

2. Local laser transfer: there are large areas of Leroy red logos on the front and back of Leroy product packaging. By observing the light, you can find the word "Leroy" and the circular laser pattern.

3. Pattern design: the words Viologo and OSTEOFORM with clear pattern effect are printed on the inner hinges at the top and bottom of the outer packaging of Rolex products. Relief patterns and thick and thin line patterns are used for anti-counterfeiting and cannot be copied by scanning, photographing, electric separation and other methods.

4. Anti-counterfeiting code: Two rows of 8-digit anti-counterfeiting codes on the bottle cap are the unique anti-counterfeiting technology adopted by Lexmark. After purchase, you can call Lexmark 800 toll-free number to check the authenticity.