L-Lysine HCl 98.5% Feed Grade, L-Threonine 98.5% Feed Grade, L-Tryptophan Feed Grade manufacturer / supplier in China, offering Amino Feed Grade Additives L-Isoleucine, China Factory Brand Fufeng/Meihua/Innobio L-Isoleucine, L-Threonine 98.5% Feed Grade and so on.