1. High hardness! Metal won't scratch! It is a good board to use a knife to cut metal materials such as keys on the surface without damaging them!
2. Quartz stone has good anti fouling performance! Due to the special treatment of mechanical pressing of quartz stone! High density! Use an oily marker to mark a few lines on the material! Stopping for five minutes to wipe without leaving any marks is a good board!
3. No pores! It is a honeycomb shaped hole on the surface of the board without pinhole size! The entire board is within 3 micropores! For the good board! On the contrary, there are quality hazards in the board!
4. The back of the board is flat
5. The board should be free of cracks, etc