We are exporter and supplier of Chemicals in China for more than 10 years .and our business area are as follows 1. Feed Grade Amino Acids : L-Lysine ,L-Threonine ,L-Tryptophan ,L-Valine ,DL-Methionine 2. Feed Grade Vitamins : Vitamin C , Vitamin E ,Vitamin D3 ,Calcium D-Pantothenate ,Folic Acid , L-Carntine ,Nicotinamide ,Choline Chloride 3. Antibiotics : Colistin Sulphate , Zinc Bacitracin , Neomycin Sulphate ,CTC and so on 4. Food additives : thickners ,vitamins , sweatners and so on