ceramic balls: high wear resistanceceramic ball high abrasion resistant, good quality with low price, 95% alumina content, Alumina ceramic ... ensure that the product not only takes on good wear-resistant.corrosion-resistant,but in selection size. the service life can be ... :3~70mm ISO9001:2000ceramic balls:high wear resistance,high abrasion resistant,good quality with low price,95% alumina content, The ...