Avian chondroitin sulfate is extracted from chicken an duck cartilage. Chondroitin sulfate have a, C, D, e, H and k structures. Natural Chondroitin sulfate are found in cartilage, larynx, nasal bone (41% pig), middle diaphragm of cattle and horse, and trachea (36%-39% chemical BOOK1), other tissues such as leg bones, ligaments, skin, and corneas also contain. Fish cartilage content is very rich, such as shark bone 50% ~ 60%, connective tissue content is very small.

Chondroitin sulfate is one of the most important components of eye tissue and has the functions of promoting corneal water metabolism, improving microcirculation, protecting the cornea and promoting the repair of corneal tissue damage, in addition to anti-bacterial and anti-inflammatory, Taurine can also participate in a variety of physiological activities in eye tissue, promote metabolism, improve visual fatigue.

In the 1990s, medical scientists discovered that Chondroitin sulfate, a mucopolysaccharide extracted from animal cartilage, is an important component of articular cartilage. It is proved that mucopolysaccharide is an important matrix of cartilage, which supplies nutrients to Chondrocytes, and can basically repair damaged cartilage caused by long-term bone-to-bone friction. The medical community calls it "Chondrogenic agent", and is known as "Human soft gold".

Chondroitin sulfate is a natural high tech biological product derived from animal cartilage. It is the main component of cartilage, forms the structure of cartilage, absorbs and maintains water in cartilage, and provides nutrients for cartilage.

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