... stiffness Excellent bend recover Nylon Filament for Toothbrush,Pa610/PA612 toothbrush Filaments 1.Product Description:-Solid round ... the subcompany of Hongda Group, Mainly produce filament include Filament for paint brush, filament for toothbrush,and ... Cosmetic brush filament, Shaving brush filament, Nailbrush filament,- Toothbrush filament,- Paintbrush filament,- Carwash brush filament,- Strip brush ...