... filament can be used in energy-saving lamp, it is uniformity in pitch,shape,color, luster and piece weight,long life. Tungsten ... used in general incandescent lamp, energy-saving lamp, fluorescent lamp, auto lamp, halogen lamp and other special lamp.Based on advanced ... variety of filament of single coil,coiled coil,triple coil,and non-standard filaments.Specification:1) Double coil: 110V-250V2) Triple ...