Bipropellant attitude and orbit control engine is an important part of modern space vehicles and strategic and tactical weapons, which is widely used in orbit control, attitude adjustment and so on. In recent years, with the development of new aircraft or weapons, the requirement for engine performance has been increasing. It requires that specific impulse be increased and chamber pressure be increased, so as to reduce propellant consumption and engine weight, prolong engine life or increase the range of strategic weapons.

Diesel engine oil is mainly composed of paraffin base oil or synthetic lubricant, which is prepared by adding many additives such as antioxidant, antiseptic, detergent and dispersant, antifriction agent and so on.

Tungsten molybdenum alloys can be used at higher temperatures than molybdenum or molybdenum alloys. Molybdenum-tungsten alloy has better conductivity, oxidation resistance and lower coating stress than molybdenum, which meets the requirement of sputtering target material for flat display film production line. Especially the Mo-W alloy with tungsten content of 3.5%25% is more suitable for high quality flat panel display.

In recent years, selective catalytic reduction (SCR) has been widely used as the most efficient denitrification technology at present. The principle of this air pollution control technology is that in the presence of reducing agent NH₃, the flue gas containing NO_x reacts with the surface of the catalyst in a certain temperature range through the catalyst, making NO_x react with the surface of the catalyst. The NH₃ reaction is converted into harmless N₂ and H₂.

Tungsten aluminum alloys have excellent properties of both aluminium and tungsten, such as low density, high specific strength, high temperature resistance, corrosion resistance and easy processing. In addition to the advantages of aluminium and tungsten, aluminium-tungsten alloy also has the greatest feature of wear resistance, which can be well applied to golf clubs and ball heads, medical equipment components (breathing machines), automotive engine piston, hub and other components, and hopefully in the future to be applied to armor materials and aerospace engines and other fields.

Ammonium metatungstate powder is widely used in chemical industry as raw material of petroleum cracking catalyst, corrosion inhibitor (anticorrosive coating or coating) for electronic components, and as important raw material for preparing composite powder, doped tungsten wire and tungsten-cerium electrode in the production of tungsten products.

The front and rear casings of the aero-engine compressor are made of iron-based and nickel-based alloys respectively. During the process of use, the butt joints of the front and rear casings are in vibration and are prone to impact wear. The original wear-resistant coatings are due to hardness. The lower the toughness, the more damage occurs after a period of wear, and the life of the front and rear casings is shortened. Therefore, it is an urgent problem to prepare a coating with high wear resistance to solve the wear of aviation equipment and prolong the service life of aviation equipment.

Tungsten disulfide lubricating material is a very good new energy-saving material for reducing wear. It can be used not only in general lubrication conditions, but also in some harsh working environments such as high temperature, low temperature, high load, high vacuum, radiation line and corrosive medium. It can be powder state or lubrication. Oil, grease and graphite, metal powder, plastics and other materials are mixed to make composite materials.

Graphene is a new kind of carbon material, which is closely packed by carbon atoms into a single layer of two-dimensional honeycomb lattice structure. It is the basic unit of building the most commonly used solid lubricant-graphite. It has lower friction coefficient than graphite. It is a new kind of additive for self-lubricating antiwear coating.

Tungsten is an indispensable strategic metal in the defense field and plays an important role in the national military strategic reserve. In view of the current status of resources, the replacement of black tungsten by white tungsten is an inevitable trend. However, China's white tungsten resource endowment is poor, accompanied by more impurities such as molybdenum and phosphorus.