After being cut by a cutting machine and not subjected to any other processes, the raw materials are called rough boards. After being polished by a polishing machine, the rough boards are called light boards.
Granite belongs to intrusive rocks in acidic magmatic rocks, which is a common type of rock in this category, mostly in light flesh red, light gray, gray white, etc. Medium coarse grain, fine grain structure, blocky structure. There are also some structures such as speckled structures, spherical structures, and gneiss like structures.