The alumina packing ball takes super fine alumina powder as main raw materials and shapped by isostatic pressures and rolling machinery and baked in tunnel kiln by high temperature. It is widely used as the packing and activator in petroleum and chemical industry. It is suitable for chemical fiber factory, alkyl benzene factory, aromatic hydricarbon factory, ethylene factory, natural gas factory etc. As the pad bottom fills in the material to catalyzes heavily to get one¡¯s thing to ready replace, isomerization device, the shed methyl device etc. Wooden box.