สอบถามสินค้าและบริการได้ทุกช่องทาง To Polish a stone with sandpaper, begin by getting rid of any parts of the rock you don't need with a hammer or chisel. Then, use 50 quality sandpaper to continue shaping the stone to the liking. When you're content with the shape, use a hundred and fifty grade Successfully Submitted (Awaiting Approval)