1,collagen peptide powder 2,source from:healthy fish 3.function:food and comestic 4.sort:peptide 5,Cas No:9064-67-9 collagen peptide powder 100%pure, no additive,fat-free, sugar-free.small molecular weight,good solubility,good compatibility .Collagen is a high molecular weight protein. Filaceous collagen fibers of collagen enable the human skin to be firm and elastic.When human body ages, ...