Alumina ball packing is a product that mixed porcelain clay or porcelain glaze and 17%~99.5% alumina. It is the covering support material and tower packing of catalyst for the reactor. It is widely used in petroleum, chemical, fertilizer, natural gas and environmental protection industrial. It can endure high temperature,high pressure, corrosion of acid, alkali and other organic solvents , with low water absorption.stable chemical properties and can withstand the temperature changes in the production process. Its main function is to increase the gas or liquid distribution point ；support & protect the active catalyst with low strength.