Zhongzhou is the large manufacturing company of alumina in China. The main products are metallurgy alumina and the special aluminium hydroxide. The production scales are 2 million and 0.3 million respectively. Through developing the technical innovation, Zhongzhou exploited three new production technics of alumina one after the other such as strengthen sinter, choosing bauxite bayer method and stripping to increase the stripping concentration by adding bauxite. Zhongzhou Branch adopts sinter method to produce aluminum hydroxide. The products are widely used in the fields of metallurgy, materials for architecture, solid surface, chemical industry, fire proof, china, paper making, glass, tooth paste, medical and so on.