1：What is the difference between car seat leather and leather?

What is the difference between car seat leather and leather? There can be three original seat covers made of different materials:
1. High-end cars use seat covers made of raw cowhide or pigskin;
2. The environmentally friendly sedan is made of PU leather (synthetic plastic), which is non-toxic and odorless. In addition, it can be automatically decomposed after being buried in deep soil; the sedan and taxi used in the Beijing Olympics and Shanghai World Expo are Use this material.
3. The PC leather (synthetic plastic) used in general family cars is non-toxic and odorous, and cannot be automatically decomposed after being buried in deep soil after being discarded, and it is volatile when burned.
Note: The base fabrics of the latter two materials are non-woven fabrics or special chemical fiber fabrics.