... , chemical, fertilizer,natural gas and environmental protection industries. As a catalyst reactor coverage tower packing materials and support, the major role ... liquid, support and protect the intensity of low strength activity catalyst. SpecificationCommon Ceramic BallsInert Alumina Ceramic BallsmediumAlumina Ceramic BallsHigh-Alumina Ceramic ... >9.8>6.5>7.8>15.5 ceramic activity catalyst balls