Leather, bonded leather and artificial leather.
Extra note:
Sheep leather, cow leather is the national requirements of sheepskin and leather official specification title!
A, leather is a cattle, sheep, pigs, horses, deer, or some other animals off of the original skin, after the tanneries tanning process, made from a variety of characteristics, strength, feel, color and markings leather materials, is the necessary information of modern leather products. Meanwhile, cowhide, sheepskin and pigskin leather is used three leather material. Leather is divided into head layer and layer leather.
(1) the first layer of skin is a grain of cattle, sheep, pig, etc., of the leather with natural scar and blood muscle scar, etc., and occasionally the cuts in the process of machining and low utilization rate of the belly of parts, import of head skin and trace the serial number of the cattle. All full grain can from the thickness and pore density difference is due to what kind of animal leather. Cowhide sort is more, such as cow leather, cattle leather, leather, cowhide, grazing oxen, not castrated bull leather and castrated bull leather. In China there are cow hide, buffalo hide, yak skin and zho skin, etc. Meanwhile, buffalo hide the pores of the thick and thin; Cow leather is a buffalo hide pore thin and thick. Skin pores are more fine and a little slope, there are mainly Sheep skins and goat two kinds big. Pigskin for hairy rule is 3 ~ 5 root a handful of scattered, so it is easy to difference, usually use pig skin of artificial breeding, and wild boar, famous South American wild boar, this kind of wild boar is of significant pig skin pores and grain characteristics of collagen fibers because of its special organization structure, can be processed into very soft leather garment leather or gloves, a high value. , ostrich leather, crocodile skin, short nose crocodile, lizard, snake skin, of bullfrog skin, seawater fish skin (there
