Located in Laibing City, Guangxi Province, the project is based on the main process of Mn sulfate leach solution preparation just by one-stage reaction of two raw materials with design capacity of 30,000t/a high-purity low-Se EMM and 20,000t/a Hg-free alkali Mn-type cathode Mn dioxide. The project was commissioned and put into operation successfully in Dec., 2006 with the main production indicators all up to the design indicators. The overall equipment and technology are up to the China advanced and world advanced level. CINF is awarded with Ministerial-level first prize for Excellent Engineering.