1.Source:Chicken Sternum 2.The sole supplier of collagen II in China, 3.Diatery supplement, 4.Improve articular diseases. ... Collagen type II (Edible level)[The origin]: Cartilage extract of chicken, cattle, ... preventing the disease.B.Skin-care NutritionGAG& collagen II in Collagen II is the key substance which constitutes dermal skin layer ...