L-Lysine HCl 98.5% Feed Grade, L-Threonine 98.5% Feed Grade, L-Tryptophan Feed Grade manufacturer / supplier in China, offering China Brand Cuc/Nhu Feed Grade Additives Amino Acids 99% Dl-Methionine, Amino Acids Meihua/Golden Corn/Dongxiao Brand Feed Grade Additives 70% L-Lysine Sulphate, Meihua/Golden Corn/Fufeng Brand Feed Grade Additives Amino Acids 70% L-Lysine Sulphate and so on.