Electrochromic means that the optical properties of materials change reversibly under the action of an applied electric field. The color and optical transmittance of electrochromic materials can be changed at low voltage, and the fading state of electrochromic materials can be maintained under open circuit condition. With this characteristic, electrochromic devices are widely used in energy saving, optical regulation and other fields. Wisdom window is one of its most representative applications.

Tungsten-based high density alloys are widely used in aviation, aerospace, military and nuclear industries because of their high density, strength, hardness and ductility. It is widely used in aerospace industry as balancing counterweight, shock absorber, kinetic energy armor piercing projectile and armor piercing material, and plasma-oriented first wall material in nuclear industry.

Mining industry, as the pillar of our national economy, consumes a lot of water resources every year. At the same time, flotation treatment also produces a large number of flotation wastewater. Among them, sulfide flotation produces a large number of wastewater containing xanthate, xanthate is the most effective and widely used collector in sulfide flotation. Most xanthate will enter the foam product with the end of flotation. If residual xanthate is discharged directly without treatment, it will cause great harm to the environment.

Cobalt tungsten carbide series is widely used as one of the most important wear-resistant coating materials with excellent properties at medium and low temperatures. Many developed countries such as the United States, Russia and the United Kingdom have carried out a lot of research work in this direction. They have formed many kinds of materials preparation methods, such as electrofusion crushing, sintering crushing, polymerization, coating and so on. Cobalt tungsten carbide coatings with different grades and different applications have been designed and prepared.

Tungsten copper based alloy is a pseudo-alloy composed of high melting point, high hardness tungsten and high conductivity and thermal conductivity copper. It has good arc erosion resistance, fusion resistance, high strength and high hardness. Contact materials for various types of ultra-high voltage, high voltage, medium voltage circuit breakers, transformer changeover switches, vacuum contactors, load switches.

With the development of science and technology, the research trend of self-lubricating technology is that solid lubricating materials without environmental pollution, long wear-resistant life, low friction and self-repairing are more and more widely used in high-tech fields such as electronics, biology, communications, aerospace and aviation. Future research mainly focuses on the research of new solid self-lubricating materials, new self-lubricating methods, new material structure design and other aspects.

Stamping die is an indispensable technological equipment for stamping production and a technology-intensive product. The quality, production efficiency and production cost of stamping parts are directly related to die design and precision quality of die parts.

At present, indoor and outdoor environmental pollution has become increasingly prominent. Photocatalytic materials can use sunlight to degrade various gas-phase and liquid-phase pollutants harmful to the environment and mineralize them into harmless water and carbon dioxide. Photocatalytic method is a very economical, convenient and feasible method to purify the environment, and its related research has attracted great attention. However, there are two problems in current photocatalytic materials, one is poor visible light response, the other is low efficiency.

Tungsten disulfide has good corrosion resistance, good adsorption capacity on metal surface, generally can withstand strong acid corrosion, high temperature resistance and low friction coefficient. Therefore, tungsten disulfide is usually used as a lubricant. Lubrication under various harsh conditions such as high temperature, high pressure, high load, high speed, high radiation, strong corrosion and ultra-low temperature.

137Cs is the main heat-releasing nuclide in high-level radioactive waste liquor. If it can be separated, the radioactive level of high-level radioactive waste liquor will be greatly reduced, and the cost of subsequent treatment of radioactive waste liquor and solid waste disposal will be reduced. In addition, 137Cs can be used as gamma radiation source in breeding, food irradiation storage, sterilization of medical devices, cancer treatment and various instrumentation fields. Therefore, the separation of 137Cs from high-level radioactive waste liquor has been one of the hotspots in the field of spent fuel reprocessing at home and abroad, and also an important goal in the process of reprocessing.