Collagen is mainly distributed in the connective tissue of mammals, which is harmful to the skin, blood vessels and bones of animals and people.

The formation of bones, tendons, teeth and cartilage is very important and is the main material basis of these connective tissues. One third of protein in human body is collagen, and there are about 3kg collagen in adults. So it is no exaggeration to say that collagen is the life support of all animals. Specifically, you can go to a regular hospital for consultation.