23-26% Inert Alumina Ceramic Ball as Support Catalyst 1.20 years professional manufacture 2.ISO9001:2008 3.size:3,6,13,50mm 23-26% Inert Alumina Ceramic Ball as Support Catalystis one of the new media in the industry with unmatched impactresistance, thermal shock, crush strength, and survivability. Products to these specifications Manufactured from very high quality chemical-porcelain clay ...