... And Double tapered PBT filament is used for processing toothbrush and cosmetic brush ,etc. 1.Technical Parameter :- ... weight filament, foaming filament, Vesicant filament,- Natural replacement filament,The products range based on application are as ... Cosmetic brush filament, Shaving brush filament, Nailbrush filament,- Toothbrush filament,- Paintbrush filament,- Carwash brush filament,- Strip brush ...