Function: The polishing machine is used for polishing granite slab. This polishing line use the advanced automatic control system, with large output, high working accuracy, high surface smooth finish. The characters of the poling line: 1. The main axle is processed by CNC digital controlled machine with higher accuracy and lower wearing rate. 2. The computerized programming ensures an easy operation with lower accident rate. 3. When this machine grinds granite, it can produce brighter slabs with higher efficiency, less grinding material in easier operation.