L-Lysine HCl 98.5% Feed Grade, L-Threonine 98.5% Feed Grade, L-Tryptophan Feed Grade manufacturer / supplier in China, offering Mixed Feed Additive Toxin Binder, Good Quality Feed Grade Additives Amino Acids Dicalcium Phosphate 18% DCP, Nhu /Cuc Brand Dl-Methionine 99% of Animal Feed Additives and so on.