COSEN collagen, the plant base of ZXCHEM USA, is the largest manufacturer of different kind of Hydrolyzed collagen/Gelatin in China, Cosen Collagen products include Type I: Fish collagen, Porcine Collagen, Bovine Collagen, chicken collagen and Type II Collagen from Chicken cartilage, Edible gelatin, fish gelatin, and industrial gelatin.