Due to the hard texture of granite, the rough surface of the fired board or rough panel is first processed by burning or high-pressure water flushing (it can also be processed into lychee sandblasting surface, etc., but the effect is not very good). It is important to note that when processing into a rough rough surface, it should be rougher than ordinary fired boards to avoid the next step of using stone grinding brushes, which may cause the stone slab to be too smooth and lose its three-dimensional effect on the layout.

　　Next, use a stone grinding brush for grinding, and it is best to use a wire brush first; Let's do a rough brush to remove the loose material on the granite surface and shape it. This not only has high efficiency, but also has minimal wear on the equipment, which can extend the service life of the grinding brush.

　　Afterwards, according to the specific requirements of the customer, use grinding brushes from coarse mesh to fine mesh in sequence to polish until the surface of the board reaches the required effect and gloss. If the customer requires a smooth matte finish, only four processes are needed: steel brush, 36 # (or 46 #), 60 # (or 80 #), and 120 # (or 180 #); If we want to achieve the effect of silk polishing, we need to add three more processes: 240 #, 320 #, and 500 #. Of course, if all processes are done, the effect will be better. As for some outdoor boards that do not require much glossiness, they can be directly brushed with a wire brush.