Dear sirs,

We are Nanning Thewill Feed Co., Ltd, we have 15 years experiences of research and production in Proven Chelated Organic Trace mineral Additive in China, and now, after passing ISO9001,HACCP and GMP certification, we are of the major makers of China National Standards of Proven Organic Trace mineral Animal Nutrition(eg. Ferrous Fumarate, Zinc Methionine, Ferrous Glycine, Calcium Citrate etc.).

We have gone trough the USA ,Japan, South Korea and Taiwan?s National test and have ...