In the field of polishing technology, Yousheng develops new abrasive discs for polishing, including sandpaper and velvet body, and the two are laminated and combined. The Velcro tape on the tray is attached by the fleece body, which is easy to assemble and use. Compared with the conventional polishing product, the main characteristic of the sand disc is that it can absorb dust and powder generated in the processing process in time, improve processing accuracy, and reduce dust and powder flying. Besides, it has good environmental protection. All these features can well improve the working environment.