... the specification as follows: Common Ceramic Ball, Inert Alumina Ceramic Ball, Medium-Alumina Ceramic Ball, High-AluminaCeramic Ball and ... thermal efficiency, large density and excellent thermal conductivity, cost-effective and long lifetime. Purpose : Thermal Storage Ceramic is widely ... , 1/16, 3/32, 5/32, 3/16, 7/32, 15/64, 1/4, 17/64, 9/32 ... , 5/16, 11/32, 3/8, 7/16, 31/64, 1/2, 17/32, 9/16, ...