"Leather and leather are two different things," Li Fangzhou said. "Now many operators often refer to leather as short skin, and artificial leather as short."

This is incorrect and not rigorous.

Skin refers to the skin collagen fiber still in its state on the animal body (referring to chemical structure).

Leather refers to

After physical and chemical treatment, the useless ingredients in the skin were removed, and the chemical structure of the collagen fibers of the skin changed.

In addition, leather is soft and easy to dry, and it is not easy to decompose in wet condition. Leather is the raw material for leather making. Leather is made of leather.

Li Fangzhou reminded that if the difference between leather and leather is the same as that of "leather".

The difference between "artificial leather" and "artificial leather" is confused, which makes it easy for the laymen 'consumers to get confused in concept and increase their difficulty in identifying leather products.