... professioanl manufacture 2.ISO9001:2008 3.Size:3,6,10,13,19,25,38,50mm Inert Ceramic Ball of Size 3,6,10,13,19,25 ... support media in the world because of their excellent consistence and reliability. Products to these specifications are manufactured from very high ... materials, which has quite excellent stability, high mechanical strength and resistance to thermal shock, This makes them all ideal choice ...