... temperature and impact resistant lamp wires, screw lamp wires, halogen lamps, fluorescent lamp wires, energy saving lamp wires, etc.3) ... rods: pothook spring cathodes for electron tubes, cathode gas discharge lamp houses, etc.4) Tungsten-cerium rods: pothook spring ... cathodes for electron tubes, cathode gas discharge lamp houses, etc. 5) Tungsten-lanthanum rods: electron tube ...