Item: Tungsten balck bar
Purity: 99.95%Min.
Type: HW31, HW61, HW91...
Size: According to customer' s drawing and true sample.

Type	Application
HW91 HW71 HW61	Applied for making filament, cathodes, setting rod at H. T, electrode etc.
HW31 HW42 HW11	Applied for making lead, support, typing needle.