1. Suitable for polishing the small piece parts. 2. Especial finished parts need precision and have size heat treat film available for film removal, debarring of casting parts. 3. Long lasting, high efficiency. 4. High grinding force and smooth abrasion. 5. Saving working time and manpower, no expert worker necessary, available for continuous processing. 6. Not easily out of shape. 7. The rotation and revolution are now well designed as using the electronic controller to support forward and reverse running and also included a break motor. 8. The tradition manpower rotate portion is now improved as much time saving and less manpower, and also easy to handle.