Vehicles in high temperature and high speed must be fully lubricated between moving parts to ensure normal operation. Lubrication system plays an important role in lubrication, cleaning, cooling and rust prevention of engine friction surfaces.

In the field of powder metallurgy manufacturing technology, grinding needles made of powder cemented carbide are widely used in mechanical drilling and dressing of jades, mechanical drilling of printed circuit boards, etc. Tungsten carbide grinding needle is a kind of cemented carbide grinding needle. Its structure is characterized by solid grinding needle, small diameter, long length, small tolerance range of length and size and high requirement of verticality.

In the field of semiconductor gas sensitive materials, tungsten oxide (WO₃) has become the research focus of nano gas sensitive materials in recent years because of its easy regulation, strong selectivity, good stability, high sensitivity and low gas sensitive working temperature.

Photocatalytic reactions can degrade almost all organic contaminants such as alkanes, halogenated alkanes, alcohols, carboxylic acids, alkenes, aromatic hydrocarbons, halogenated aromatic compounds, polymers, insecticides, herbicides, dyes and brominated flame retardants. Contaminants such as disinfection by-products. Therefore, photocatalysis technology is considered to be an ideal new technology for environmental management and a most promising means of controlling environmental pollution.