Barium strontium tungstate cathode as tungstate cathode first appeared in the form of compacted cathode in the 1960s. The cathode is made of barium strontium tungstate (Ba₅Sr (WO₆)₂) as an active material for emission. The synthesized barium strontium tungstate and activator, as well as tungsten powder with a certain size, are pressed and sintered in hydrogen at high temperature.

Additional material manufacturing is a new processing technology, which is different from the traditional "removal" manufacturing. It does not need the original embryo and die. According to the computer three-dimensional model data of parts directly, it can form any complex shape object by adding material layer by layer. Nowadays, people have given the added material manufacturing a fashionable name - 3D printing.

Unbonded tungsten carbide cemented carbide has better high temperature resistance, wear resistance, corrosion resistance, oxidation resistance and higher hardness than traditional cemented carbide. It is becoming an important development direction of high wear resistant cemented carbide.

Tungsten oxide (WO₃) is an indirect bandgap n-type semiconductor material with a band gap of 2.2-2.8eV. It has good absorption of visible light, so it is a very promising semiconductor photocatalyst. In common practice, metal ions are doped into semiconductor photocatalysts, and the recombination of electron-hole pairs can be significantly inhibited by IFCT effect, which can greatly improve the photocatalytic activity of photocatalysts.