Usually 8k machine is a group of 8 grinding discs; A set of 8k machine production line needs 10 group-15 group for polishing; Plate or adhesive tape enters the 8k main machine in a pinch mode, and the grinding disc in the main machine rotates and grinds, and each group is staggered from left to right and swings evenly to cover the polished plate area; After grinding and polishing, the plate enters the cleaning dryer for cleaning and drying. If coating is needed, it can also go through the coating machine process. The 8k machine needs to be polished with liquid medicine made of nitric acid and iron oxide (or alumina), which will cause certain pollution to the environment and water flow.