Ming Wang's nail polish brush filament is crafted from materials such as PA66, PA612, and PBT, imbued with fine elasticity, robust rigidity, and strong resistance to chemical corrosion. These attributes allow them to be immersed in nail polish for extended periods without discoloration, maintaining excellent bending recovery and resilience, while repeatedly used without deformation. Packaged in spool form, the filament prevents tangling and shedding, thereby reducing manual replacement and enhancing efficiency.