Tungsten alloy tube can be used as a radiation shield in a mobile CT scanner. The tube is a sleeve made of tungsten alloy plate, with thickness of 1-5 mm. The tungsten alloy shielding tube has a slit with the same width as the detector for X-ray photon emission to realize CT imaging.

WS2 dry lubricant, also known as WS2 dry film lubricant, is the best way to solve surface abrasion. It has been widely used in the automotive industry, machinery industry, medical equipment and other industries. As early as the 1980s, the United States has used WS2 colloidal products (equivalent to WS2 nanoparticles) to spray on the metal surface to form a dry film that can greatly reduce the friction coefficient and improve the life of the mold.

Fine tungsten disulfide is a tungsten chemical product. Tungsten disulfide (WS2) is mainly used as a lubricant or as a petroleum catalyst. There are many preparation methods for fine particle size tungsten disulfide, including the ammonium tetrathiotungstate method, sulfur method, and the preparation method using WO3 and W powder as raw materials and introducing hydrogen sulfide gas or sulfur vapor. At present, the most commonly used method in industry is ammonium tetrathiotungstate method.

WS2 solid lubricant is a kind of sulfide solid lubricant, and is also one of the currently preferred solid lubricants, which has the advantages of low friction coefficient, strong adhesion, and good film-forming properties. In recent years, the ultra-low friction and ultra-low wear shown by hollow inorganic fullerene-like nano WS2 have attracted much attention.