This machine has a CNC control system,we just need to set the running program, set the starting point and end point of the grinding head, click the start button, the machine can run automatically and finish the polishing work.It works very efficiently and has a good polishing effect to achieve a mirror finish.Customers in Korea,we have received the machine and have given good feedback. The machine is running very well and the polishing results are great.We supply China professional metal tank,dish end,pipe and flat sheet polishing machine.Come and see us.