Manual Granite Marble Stone Slab Grinding and Polishing Machine This machine uses round column as its guide slip surface for steady automatic ups and downs. Two optional main drive motors (single speed and dual speeds) are upon the client's choice. It is applicable to surface grinding and polishing of granite and marble. especially for tombstones, slabs and mosaic. Available for Arc slab polishing as well if assorted with table. Configurations:1. SIEMENS main motor with stronger seats.2. PANASONIC PLC and inverter.3. Strong cast iron HT200.4.Touch sensitive Panel Easy for worker to operate.5. 8-9 sqm per hour for medium hard marble with 20-30mm thicknesss. Configurations:1. SIEMENS main motor with stronger seats.2. PANASONIC PLC and inverter.3. Strong cast iron HT200.4.Touch sensitive Panel Easy for worker to operate.5. 8-9 sqm per hour for medium hard marble with 20-30mm thicknesss.