Electrical contact materials play an important role in instruments and electrical switches. With the development of high-voltage power transmission and transformation to large capacity and ultra-high voltage, the improvement of automation level and sensitivity of low-voltage power distribution system and control system, as well as the renewal of electronic industrial products, have put forward new requirements for electrical contact materials.

Cemented carbide is a kind of alloy material which is made by powder metallurgy process, with high hardness and refractory metal carbide powder (WC, TiC, TaC, NbC, etc.) as the main phase and transition metal cobalt, nickel as the binder phase. With high hardness, high strength, high toughness, wear resistance, high temperature resistance and small expansion coefficient, it is widely used in cutting, drilling, mining, tool forming and wear-resistant parts and other fields.

Phenolic resin refers to a polycondensate synthesized by phenols and aldehydes under the action of an acidic or basic catalyst, which has excellent adhesion, excellent heat resistance, unique ablation resistance and good flame retardancy. Widely used in aircraft and aviation, military equipment, automotive and transportation, construction and other aspects.

The structure of carbon nanotubes is particularly a tube composed of a hexagonal network similar to graphite. The unique nano-hollow structure and closed helical structure with different topological configurations make it have a lot of special excellent properties. Such as good electrical conductivity, heat resistance, high mechanical strength, corrosion resistance, self-lubricating and biocompatibility, etc.

A large amount of blast furnace slag will be discharged in the process of blast furnace ironmaking. If not properly treated, it will occupy land, pollute the environment and cause waste of resources. Blast furnace slag contains valuable metals such as titanium, silicon, aluminium and calcium. It can be separated, extracted and processed into chemical products by appropriate methods. It can make rational use of industrial waste resources and solve environmental pollution problems.

SCR denitration technology is a necessary means for power plants to achieve ultra-clean emissions. Catalysts, as a core part of SCR denitration technology, lose their activity due to wear or blockage during operation. Some of the regenerable catalysts can be reused after regeneration, while the catalysts that cannot be regenerated face the situation of rational utilization and disposal.

Nitrogen oxides (NOx) are important atmospheric pollutants that can cause environmental problems such as acid rain and photochemical smog, as well as direct damage to the human respiratory system.  In addition, it also has an important contribution to the increasingly serious ash pollution in our country.  Therefore, effective control of NOx emissions is a major strategic need in China.

Tungsten is China's advantageous resource. China's reserves and consumption rank first in the world. However, the high value-added high-end products of tungsten products are monopolized by foreign companies, especially tungsten heating elements and supports used in high temperature environments. Mainly relying on imports, domestic imitation products are poor in thermal stability, easy to deform, short in life and limited in application.

Bismuth tungstate (Bi₂WO₆) is a typical n-type semiconductor formed from octahedral WO₆ and Bi₂O₂ layers. Bi₂WO₆ has excellent chemical properties, unique ferroelectric properties, catalytic properties and magnetic susceptibility of non-linear dielectrics. Bi₂WO₆ is a good visible-light photocatalyst material.

Tungsten-copper composite is one of the heat sink materials widely used in power devices. It has good thermal conductivity and thermal expansion coefficient close to that of Si, GaAs and other semiconductor cores. Density of composites is the main factor affecting the electrical conductivity, thermal conductivity and expansion properties of composites, and it is also the key technical index.