The first layer of cowhide. Wax skin is a kind of leather tanning process, which needs to be separated from the production process of ordinary leather in water plant. The main difference is that in the tanning stage, ordinary leather mainly adopts chrome tanning, vegetable tanning and aldehyde tanning. Wax skin adopts oil tanning. After tanning and dyeing, the leather is soft, elastic and stretchable. In the later finishing process, oily and waxy hand agents are used to make leather, which is very suitable for clothing, bags and so on.