1. The meaning of leather: 
"Genuine leather" is a common word in the leather goods market,which is being on the Cheap New Balance is one to distinguish synthetic leather and a habit of natural leather. In the minds of consumers, "genuine leather" also has the meaning of the false. It is mainly processed by the animal's skin. Leather varieties, different structure, different qualities, price six to one. Therefore, the leather is all natural leather collectively known as a vague identity is also a commodity market. 
According to the physiological point of view, any animal skin hair, epidermis and the dermis. Due to the small reticular fiber bundle is contained in the leather, so all have considerable strength and permeability. Under the skin is hair, closeing to at the top of the leather is made up of different shape of epidermal cells arranged. 
The thickness of epidermis and varies as an animal, such as the epidermis thickness of the leather is the total thickness of 0.5 ~ 1.5%; Sheep skins and goat skin for 2 ~ 3%. While the pigskin for 2 ~ 5%. Leather is located in the epidermis, between skin and subcutaneous tissue, are an integral part of raw hide. The weight or thickness of raw hides more than 90%. 
2. The leather raw materials: 
The raw material is animal skin leather of the Womens Supra Skytop, which is the best material used on although we are living in one of the most common is pigskin, cowhide, sheepskin, but in fact most animals can be used for leather every one. Only leather, pigskin and sheep's good quality and large output, is the main raw material of leather. 
According to international and the series of laws and regulations issued by the animal protection act, really used in the production of raw materials in the degree has been curbed, commonly used are: leather cattle, sheep leather, pig leather and horsehide. 
The properties of the leather and distinction 
Leather is divided into two categories, the first layer leather and Mirror Pu Imitation Leather Fabrics split leather. 
The first layer of leather grain leather, corrected grain, embossed leather, special effect leather, embossed leather; Split leather and pig split and layer and leather, etc. 
1) the first layer of skin 
Is processed directly by the animals all of the original skin of full grain, or the thicker cortex of animals such as cows, pigs, horses skin after hair removal cut into two layers, the upper part of the fibrous tissue closely is processed into a variety of head skin. Leather has 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 the serial number of the cattle. 
All full grain can distinguish from the thickness and pore density belong to what kind of animal leather. Cowhide sort is more, such as cow leather, cattle leather, cowhide, bull leather, not castrated bull leather and castrated bull leather on the surface used on New Balance For Womens. In our country and cow hide, buffalo hide, yak leather and zho leather, etc. Every kind of leather are its spine position best, worst to top position, so the back outside of leather, used for making small leather goods or simply lose more. (in addition, the ostrich leather, crocodile skin, short nose, crocodile, lizard, snake skin, bullfrog leather, seawater fish skin (there's a shark skin, cod skin, SLATE cod croaker fish skin, eel skin, pearl skin, etc.), fresh water fish skin (such as grass carp, carp skin scaly skin), hairy fox (silver fox skin, blue fox, etc.), the Wolf skin, dogskin, rabbit skin is easy to recognize, and cannot be made on the second floor leather.) 
2) split leather 
Is thick skin with a piece of leather machine and cutting layer, is a fibrous tissue is relatively loose, the second part of the chemical material spraying or covering, PVC, PU film, so also known as the paster cowhide. Its price is generally head skin cheap, high utilization rate. But along with the change of process also made various grades of varieties, such as import layer cowhide, because of unique technology, stable quality, innovative varieties, for the current high-grade leather, price and grade as the first layer leather. 
Distinguish between head skin and skin effective method, on the second floor is to observe the longitudinal section of leather fiber density. 
By head skin is thick and thin fiber layer and closely together slightly loose transition layer composed of, with good technology of strength, elasticity and plasticity, etc.which you can learn more or buying from our Nike Original Blazer 2 are only loose skin layer of fibrous tissue, only after spraying chemical raw materials or polishing can used to make leather products, it keeps its natural elasticity and the characteristics of the technology of plasticity, but strength is poorer, its thickness requirements as well as the head skin. 
And used in the popular production of all kinds of leather, leather processing technology a little different, but to distinguish method 
Detailed below multiple passes through the leather processing leather!