... Marine fish, Bovine, Porcine, and Chicken) Product Introduction: Collagen is the primary structural protein found in the connective tissues ... and keep health according to absorption from man-made collagen. Collagen can be extracted from Skin or Gristle of fresh ... very edible. Take different techniques, there are Hydrolyzed Collagen, Active Collagen, Collagen Peptide, Geltin and so on. Our products are ...