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Fraud in the surface of the focus skin. Then we can start with the back to distinguish between true and false. Behind the leather will have a natural fuzz fiber, fingernails scraping does not drop. Imitation leather back skin is generally smooth wove, without wool fibers. There is also a fiber from the skin, the back will have fiber, but this is fake leather. I used to get some unscrupulous shops Shop "foil skin" cheating. It is behind a leather surface of the fiber, but also the leather smell, the texture is difficult to distinguish. You can find the edges fingernails surface coating layer, the epidermis will be like solidified glue was set off, because it is used to broken skin leather pulp after playing powder made of the adhesion between the coating and it is not enough, pull hard side, leather is very easy to crack.