Leather leather with leather is what material?
According to the current standard QB / T2262-96 "leather industry terminology" in the definition of leather, leather, "skin" is taken from animals, tanned leather
Also known as raw hides; "leather" refers to the use of raw hides after tanning, anti-corrosion and other processing products can be made into leather products.
The first layer of leather, the first layer of patent leather to leather. The second layer of leather to cattle layer leather
Leather leather is the industry standard called, that is, we usually say that the leather, also called the first layer of leather, leather products are not allowed to write only two words, and the first layer of leather must write: cow leather leather : Cattle peel layer transfer film leather