68% Mid-Alumina Ceramic Grinding Ball-

68% Mid-Alumina Ceramic Grinding Ball

Generally, we classify those with 68% alumina content as medium-aluminum balls.

75% Mid-Alumina Ceramic Grinding Ball-

75% Mid-Alumina Ceramic Grinding Ball

Generally, we classify those with 75% alumina content as medium-aluminum balls. Some types mainly made by hand by some special ceramic factories.