... is mainly used on the fine grinding and polishing of optical glass, quartz, crystal, electronic component, high-precision plane components ... plane components processing. (equipped with correcting apparatus, upper and lower unit) Main technical specification1、Millstone dia.1200mm2、Washbasin dia.1400mm3、Millstone ... ;OEM Service provided. CW12A Plane Precision Ring Polisher machine (Optical Lens)