When pilots fly an aircraft, the weight and gravity of the ship will affect the safety, maneuverability and performance of the aircraft. It is essential to maintain a stable center of gravity for optimal control and compliance with flight safety standards.

Solid acid catalytic materials have attracted more and more attention because of their unique structure. Niobium tungstate, as a typical solid acid catalytic material, exhibits good catalytic activity, selectivity and stability in some organic synthesis reactions. In addition, due to its unique structure and physicochemical properties, niobium tungstate compounds have attracted widespread interest in piezoelectric, dielectric and thermodynamic aspects.

In recent years, with the high integration of super LSI, the use of materials with lower resistance as electrode materials or wiring materials has been studied. In such materials, high purity tungsten with low resistance, thermal and chemical stability is used as electrode materials or wiring materials.

Manganese tungstate (MnWO₄) crystal has tungsten-manganese iron structure and belongs to the direct bandgap semiconductor material. Because of its special optical, electrical and magnetic properties, it has been widely used in the fields of photoluminescence, optical fibers, scintillators, humidity sensors, magnetic materials and ferroelectric materials.

In recent years, lead-containing materials are being gradually eliminated due to their high pollution, high toxicity, low strength and low efficiency. High tungsten content materials are ideal substitutes at present. However, for metal materials, its processing difficulty is very high, which limits its application in some fields.

With the rapid development of material surface modification technology, thermal spraying, plasma spraying and other technologies are more and more widely used in the die. After the traditional die is used for a long time, the surface of the die will be damaged, cracks and other problems, maintenance troubles, and need to replace the new die.

Hard metal is regarded as a kind of composite material, in which WC phase is used as hardness carrier. The brittleness of pure WC related to high hardness can be compensated by metal binder phases (usually Co, or Fe and Ni and their alloys and optional Cr). When the content of binder is high, the mechanical wear resistance is not enough, but when the content of binder is low, the mechanical strength is not enough.

Tungsten-containing material is the best high-energy radiation shielding material. It has excellent attenuation and absorption ability to X-ray and radioisotope radiation, which is more than 40% higher than the commonly used lead. It has been widely used in medical diagnosis and treatment, nuclear energy utilization, product safety inspection, industrial flaw detection and other fields.

Photocatalytic oxidation technology has good selectivity, can react at room temperature and pressure under mild conditions, and can degrade organic pollutants into non-toxic and harmless inorganic substances. It is a green technology with important application prospects in the field of energy and environment. In recent years, more and more reports have been reported on photocatalytic oxidation of organic wastewater. Semiconductor materials used are also various, such as titanium dioxide, zinc oxide, Fe₂O₃, CdS, WO₃, etc. The photocatalytic stability of WO₃ is good, but its activity is relatively small.

Tungsten alloys are alloys based on tungsten with other metals. They have small size, high density, high melting point, high hardness, high wear resistance, high ultimate tensile strength, good ductility, low vapor pressure, high temperature resistance, good thermal stability, corrosion resistance, good seismic resistance, extremely high radiation absorption capacity and excellent impact resistance. It is widely used in industry, military, scientific research, medical treatment, sports and other fields because of its excellent properties such as strength, crack resistance and non-toxicity.