Phophotungstic acid application includes catalyst, printing and dyeing, coloring agent, biological sample dyeing, protein precipitation and bipolar ion exchange membrane.

Copper phosphotungstate is a product of reaction between phosphotungstic acid and copper nitrate, used as catalyst for petrochemical oxidative desulfurization, catalytic synthesis of acetyl acetal, tetrahydrofuran.

Bismuth phosphotungstate is a bismuth salt of phosphotungstic acid, as a catalyst with green powder, chemical formula of BiPW₁₂O₄₀, generated by metathesis and microwave solid-phase synthesis method from phosphotungstic acid and bismuth trichloride.

Tungsten oxide photocatalyst mainly use WO₃ as raw material, it can be applied in air purification, anti-fog and self cleaning, anti-baterial.

Nano tungsten trioxide is tungsten trioxide with grain size less than 100nm, it has larger specific surface area and can be produced by solid phase reaction method, it has strong magnetic absorption ability, catalytic property and gas sensitivity.

Ammonium paratungstate (APT) can produce ammonium metatungstate, yellow tungsten oxide and blue tungsten oxide by thermal decomposition.

Although gold plated tungsten bar can be regarded as gold substitution, their manufacturer processes are quite different.

The tungsten oxide composite powder is a mixture of different kinds of tungsten oxide powder, in which each particle is composed of two or more different chemical components to achieve a uniform degree of mixing at the particle level.

Tungsten trioxide’s chemical formula is WO3. Some of the applications of WO3 are shown as bellow.