Tungsten trioxide is often doped with a group VIII B metal element, and then it is prepared into dispersion for producing study thermal insulating glass coating - a well-known heat shielding material. For the raw material tungsten trioxide powder, the experts dispersed it using ultrasonic separation. And they conducted the structural characterization of the tungsten trioxide powder using X-ray diffraction (Philips by a KCu source with a wavelength of 1.54056 Aº).

Tungsten trioxide for the production of kitchen thermal insulating glass coating can be prepared using sodium tungstate dehydrates (Na2WO4·2H2O, 99.99%,) powder as the starting material, and hydrochloric acid (HCl, 37%) as well as nitric acid (HNO3, 68%) as the chemical materials for ion exchange reaction. Oxalic acid dihydrate powder (H2C2O4·2H2 O, 99.99%) and polyethylene glycol with a chain length of 200 (PEG 200, 99.99%) were used as the complexing agent and polymeric source, respectively. Deionized water was used for solution preparation and washing steps. All the chemicals and solvents were used without further purifications.

Tungsten trioxide for the preparation of balcony thermal insulating glass coating is tungsten trioxide nanopowder, which is regarded as one of the most interesting material in the fields of material science.

Tungsten trioxide for preparing bedroom thermal insulating glass coating is tungsten trioxide nanopowder, more specifically, metal oxide nanopowder, which can be produced by using a chemical method - the sol-gel technique. And the sol-gel method is known as a very simple and inexpensive approach in which shape and size of powder can successfully be controlled.