Tungsten is a strategic metal. It is well known that rare metals are important strategic resources for the country, and tungsten is a typical rare metal with extremely important uses. It is an important part of contemporary high-tech new materials, and a series of electronic and optical materials, special alloys, new functional materials and organometallic compounds all require the use of tungsten with unique properties. Although the amount used is small, it is vital and indispensable. As a result, it is widely used in contemporary communication technology, electronic computers, aerospace development, medicine and health, photographic materials, optoelectronic materials, energy materials and catalyst materials.