... years professioanl manufacture 2.ISO9001:2008 3.Size:3,6,10,13,19,25,38,50mm Inert Ceramic Ball of Size 3,6,10,13 ... high quality chemical-porcelain clay materials, which has quite excellent stability, high mechanical strength and resistance to thermal shock, This makes ... types of catalyst. Chemical composition Al2O3+SiO2Al2O3Fe2O3MgOK2O+Na2O +CaOOther> 93%17-19%<1%<0.5%<4%<1%Leach able Fe2O3 is less ...