The WL20 lanthanum tungsten electrode is a tungsten-based alloy electrode material that contains approximately 2% lanthanum. 

Tungsten alloy dart billets are produced using a powder metallurgy process, combining materials such as tungsten, nickel, iron, and copper. 

The 70WC30Cu tungsten carbide copper rod is a composite material typically composed of 70% tungsten carbide and 30% copper. Due to the unique combination of tungsten carbide and copper, this material possesses exceptional physical and chemical properties.

Black tungsten wire is a fine wire made from tungsten material, known for its excellent electrical conductivity and high-temperature resistance. It is widely used in electronic components, filaments, vacuum devices, and high-temperature furnaces.