... our customers.We Premix following raw materials .1.Amino Acid :L-Lysine,Glycine,DL-Methionine,DL-Theronine DL-Tryptophan ,etc..2.Vitamin ... sulfate,etc5.Appetite promoter :Vanillin,Malic Acid,Lactic acid,Ethyl Acetate ,etc ...6. Antibacterial agent :Tylosin, oxytetracycline ,Flavomycin etc..7. Vermifuge ...