Real leather refers to natural leather, processed from animal skins. According to their types, there are mainly pig leather, cow leather, sheep leather, horse leather, donkey leather and kangaroo leather, and a small amount of fish leather, reptile leather, amphibian leather, ostrich leather, etc. Among them, cow leather is divided into cattle leather, buffalo leather, yak leather and yak leather; sheep leather is divided into sheep leather and goat leather.
Sapial skin
What is it:
The first layer of cowhide is the epithelium of the bovine body. Its surface has primitive skin characteristics and is composed of a fluff-like fiber layer and a slightly loose transition layer closely connected to the fiber layer.
Advantages and disadvantages: The surface of the first layer of cowhide leather has clear pores and clear texture, and has good natural characteristics. The appearance is flat and soft. The texture is firm and elastic when touched by hand, but it is relatively easy to damage.
Distinguish:
Identify the quality of the top layer of cowhide and observe whether the cross section of the leather is intact. If it is a high-quality first-layer cowhide, you can clearly see the compact cross-sectional structure; but if it is a poor first-layer cowhide, its cross-section looks very rough.
Cleaning and maintenance:
 1. Clean up frequently to keep the pores on the surface of the cowhide from being blocked by dust, and also to keep the room ventilated frequently. 2. In normal cleaning, be sure to use pure cotton cloth or silk to moisten it and wipe it gently. After wiping, spray it again with Bi Lizhu or glazing wax to keep it smooth. 3. If there is a ballpoint pen, it can be removed by gently rubbing it with an eraser within the effective time. 4. Avoid exposure to the sun, fire roasting, water washing, sharp object impact and contact with chemical solvents. 5. Keep dry and store in a cool, ventilated place.
Split leather
What does double skin mean?
Two-layer leather: It is obtained by splitting the thick leather with a peeling machine. The first layer is used to make full-grain leather or trimmed leather. The second layer is made into a two-layer leather through a series of processes such as painting or filming. Its fastness It has poor abrasiveness and is the cheapest kind of leather of its kind. The two-layer cowhide is made of cow suede after wet processing, adding PVC and PU materials for re-bonding. It is suitable for making leather products. It looks very high-grade, and its appearance is no different from that of the first layer of leather.

Two-layer cowhide characteristics: the reverse side is the second layer of cowhide leather, coated with a layer of PU resin on the surface, so it is also called film cowhide. With the change of craftsmanship, it is also made into various grades, such as imported two-layer cowhide. Because of its unique craftsmanship, stable quality, and novel varieties, it is the current high-end leather, and the price and grade are no less than the first-layer leather. The cowhide should be divided into the first layer of leather and the second layer of cowhide, that is, the composite cowhide. The first layer of skin is the bovine skin, with original skin characteristics on the surface, with clear pores and clear skin texture. There are individual differences, fluff density and length will be different) and a slightly loose transition layer closely connected with it, which has good strength, elasticity and process plasticity. Composite cowhide, also called two-layer cowhide, but not cowhide skin. It is made by breaking the leftovers of the first layer of leather and adding polyethylene material to reattach it, and then spray chemical materials or cover with PVC or PU film on the surface. It still retains the characteristics of cowhide, but the durability and strength are not as good as the first layer of cowhide. The first layer leather should be divided into first-level first-layer cowhide, second-level first-layer cowhide, and third-level first-layer cowhide. The second-layer cowhide is composite cowhide, that is, broken leather. Composite cowhide, also known as film cowhide, is two-layer cowhide, smooth and shiny without wrinkles.