A series of specifications available: Vacuumized WAL-31 Good winding property,non-sag,applied for making incandescent ... ,coiled-coil or trispiral CFL filament,feast lamp and support.WAL-61 Good processability,applied for halogen lamp and coiled-coil ... incandescent lamp.WAL-91 High recrystallization temperatures and non-sag, applied for making ...