... to polish optical lens,prism,glass substrate, glass clock,silicon wafer and crystal glass.We are the unique expert manufacturer of large specification ... , 2200×1100, 2400×1200, 2600×1300Thickness0.5, 0.8, 1.0, 1.27, 1.5, 2.0, 2.5, 3.0Further operationback gummed ...