There are many kinds of sharks, about 400 kinds. Sharks are one of the few animals on the earth with a cancer incidence rate of less than one in a million. They are considered to be the most effective fish. China advocates the same origin of medicine and food. The oldest medicine book《Shennong's Herbal Classic》records the medical efficacy of sharks. Although shark is a fish, its axial bone is formed by cartilage, belonging to Chondrichthyes, and cartilage contains rich mucopolysaccharides.

Shark cartilage powder is a white to off white amorphous powder made from shark cartilage after physical treatment such as impurity removal, cleaning, sterilization and crushing. It has a light characteristic fishy smell, does not coagulate when heated, and is insoluble in ethanol, acetone and glacial acetic acid. People have studied the active ingredients in sharks and found that sharks contain active ingredients that inhibit tumors.

Shark cartilage is a kind of avascular tissue, which is mainly composed of proteins, minerals, carbohydrates and rare elements.

Different shark parts have different active ingredients; The active component of shark fin is the highest, and the content of mucopolysaccharide can reach more than 25%.

Because shark cartilage contains rich mucopolysaccharides, it can be used as a dietary supplement for bone and joint maintenance.