Specifications:1) Type one: WAL1a) Tungsten content: 99.92%b)
Applications: high temperature and impact resistant filament, double
screw filament, grid cathode, folding filament and twist tungsten wire2)
Type two: WAL2a) Tungsten content: 99.92%b) Usage: common filament,
heating wire, grid cathode, tungsten wire and tungsten heater3) Diameter
(um): 5