Large pore alumina catalyst carrier with excellent surface properties, such as large surface area, strong adsorption properties of the surface, the surface acid sites, as well as long and short, big empty structure, widely used as a catalyst carrier, dry sorbent used in petrochemical, organic chemical industry, rubber industry, fertilizer industry and environmental protection industry and other industries.    Pore Volume 0.6--0.8 g/cm3、Surface Area 220--240 m2/g 、Bulk Density 0.49g/cm3、Appearance White Sphere