tungsten twisted wire, wolfram twisted wire, w twisted wire Purity: W >99.95% Density: 19.25g /cm3 tungsten twisted wire, wolfram twisted wire, w twisted wiretungsten twisted filament, wolfram twisted filament, w twisted filamentPurity: W ... graphite surface.After removing graphite, it has metallic luster.tungsten twisted wire is used in vacuum evaporation .We can provide 1-8 ...