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.

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.

Hydrogen reacts with oxygen to form water, which does not pollute the environment. It is a clean energy and can also be used in chemical production processes such as ammonia synthesis. Electrochemical catalytic is a major method of hydrogen production. However, precious metal materials represented by platinum-based metals are expensive and have a small amount of resource storage, which limits the development of electrocatalytic hydrogen production.