Tungsten trioxide (WO₃) is an important n-type semiconductor oxide. It has many crystal structures. It has been extensively studied because of its unique physical and chemical properties. It has been applied in the fields of electrochromic, photochromic, sensing and catalysis.

Bismuth tungstate is a new type of photocatalyst material, which is easily stimulated by visible light, can degrade organic pollutants. The reaction conditions are mild, the degradation is thorough, and the environment is clean. Bismuth tungstate has become one of the hot technologies in the field of pollution control.

Ultrafine/nanocrystalline cemented carbides overcome the contradiction between strength and toughness, have high toughness and wear resistance, and have become a hotspot in the field of cemented carbide technology in the world.

Clean energy is one of the most important problems in the sustainable development of human society. Hydrogen is not only an ideal clean energy source, but also an important chemical raw material, which has attracted worldwide attention. On the other hand, hydrogen fuel cell has become one of the hotspots of new energy vehicles in the future due to its high energy, high efficiency and environmental friendliness.