... is used for processing toothbrush and cosmetic brush ,etc.PBT Single Tapered FilamentDiameter :0.05~0.65mm Cross-section: Upon ... 1200mm Bundle Diameter:50±2mm Density: 1.30g/cm3 Melting Point: 223°C Package: White crepe paper,PEtube,PEwrap,Spool Qualified ... Filaments, as short as 15mm, can be manufactured for power/Electric toothbrushapplications. We are constantly research and development of shorter ...