Veg-tanning is the most common leather. Its name comes from the bark of plants and trees in the process of tanning. These plants combine to create hard but natural colored leather. The light color of vegetable tanning will not be retained for a long time, and will become soft and deep with time, showing a unique luster. It should be noted that Veg-tanning cannot be soaked in water, otherwise it will shrink and become brittle after drying.

Polyurethane artificial leather can be divided into dry polyurethane artificial leather and wet polyurethane artificial leather. The so-called dry-process polyurethane artificial leather refers to the multi-layer structure formed by volatilizing the solvent from the solvent-based polyurethane resin solution, and adding the multi-layer film and the backing cloth. The wet polyurethane artificial leather is a multi-layer structure with good permeability and moisture permeability and continuous porous layer, which is obtained by using solvent-based polyurethane resin and water film forming method.