... machine 12 head,more or less heads ,continue polishing and grinding KBJX 12 heads linear stone polishing machineThis series ... using, lower hazard rate, lower maintenance cost, etc advantage.2. With the best quality belt with famous brand, thickness ... degree.Technical data Processing width: max 900mmProcessing thickness: max30mmGrinding Heads: 9-12Capacity: 150-300 square meter per 8hoursTotal power: ...