1) Length: according to customers' requirement 2) Purity: OVER 99.95% 3) Carton package/wooden packing 1) Type & Application: TypeApplicationWBWB91Applied for high temperature-resistance tungsten wireWB61Tungsten wire for making GLS filament.WB31Tungsten wire for making tungsten heater element, electrode, lead-in wire, etc.WW2Electrode, contact, etc.W4Alloy additive2) Chemical composition (%): ...