... GRADE: G10-G100 4.high quality 5.professional manufactory Al2O3 BALL / alumina ball1. COLOR: TINY YELLOW COLOR2. DIAMETER: 1.588MM-31 ... hot press moulding, dry-pressing, cool casting, and equipped with ball mills, material mixers, hot die-casting machines, gas kilns, high-temperature ... of specifications for different uses according to customers' requirements. Al2O3 BALL / alumina ball