PXKS350 Ultrasonic Mold polishing machine can greatly reduce the suface roughness and improve the suface ... .Higher efficiency. 5. Widely used.Not limited by complicated work,shape and hardness of material 6. Precised working.won’t influence ... , corner, blind holes into lens face. 2.Polishing material: Various kinds of metal, hard alloy, glass, malachite and agate, etc. 3.Surface ...