Guangxi Teng County Yongfeng Chemical Products Co., Ltd established in 1996 . Now enjoys good location for it is situated at Mengjiang town, Teng County in Wuzhou region of Guangxi province and at the bank side of Xi River. Yongfeng is a specialized manufacturing enterprise of Ferrous sulfate monohydrate and Manganese sulfate monohydrate, with the annual outputs of 15, 000 tons of Ferrous sulfate monohydrate and 12, 000 tons of Manganese sulfate monohydrate separately. Up to now, our products have successfully obtained the production licenses of China Agriculture Ministry for feed additives, certificates of ISO9001: 2000 quality system and pre-registrations of REACH (EU). They now are well sold in Guangdong, Tianjin, Shanghai, Beijing, Liaoning, Hong Kong and Macao; some of them are exported to USA, Spain, Japan and Europe, and customers are highly satisfied with our products!