1. Cleaning the countertop: firstly, wipe the countertop with warm water and neutral detergent to clean the dirt and dust on the surface.

2. Polishing: Polishing with sandpaper or a stone grinder with abrasives. You can choose the appropriate abrasive particle size according to the mesa material, from rough grinding to fine grinding, and gradually improve the brightness.

3. Polishing treatment: use a polishing machine and polishing powder for polishing treatment. Spread the polishing powder evenly on the desktop, and then polish it with a polishing machine until a satisfactory luster is obtained.

4. Cleaning the countertop: Clean the polishing powder on the countertop with clean water to ensure that the countertop is clean and tidy.

It is worth noting that different stone materials may need different treatment methods and tools, so it is best to know the characteristics of stone materials and related treatment skills before polishing. In addition, if you don't have professional decoration experience and equipment, it is recommended to ask a professional stone maintenance company or professional workers to complete this task to ensure the best effect.