1. Brush should not fall off during the working process.
2. Brush in the base of the brush should be fixed with high-strength stainless steel materials to prevent corrosion.
3. The use of wavy curved brush.
4. The sanding in the brush should not be caused by the bending of the wire.
5. Reasonable brush height and density.
6. Brush silk in humid environment should have a high hardness and toughness.
7. Brush silk should have good bending recovery.
8. Brush silk should have good wear resistance.