... Group, Mainly produce filament include Filament for paint brush, filament for toothbrush,and abrasive filament,Main Material ... retardant filament, UL-V0 FR filament,- Anti-electrostatic effect filament,- Flaggable filament, Crimped filament,- Negative-ion ... mat filament, Anti-UV filament,- Bio- filament, Environment friendly filament,- Light weight filament, foaming filament, Vesicant filament ...