Type I collagen peptide takes scale/skin/bone as raw materials, and its main target is skin, whitening/skin care/anti-wrinkle/moisturizing, etc. Type II collagen peptide takes cartilage as raw material, and its main target is joint. Type III collagen peptide mainly comes from connective tissue/embryo/tendon/cardiovascular, etc., and its main target is cells, blood vessels, tendons, etc.