Tungsten wire, as a metallic material possessing extremely high melting point, hardness, and electrical and thermal conductivity, not only holds a significant position in industries such as manufacturing, electronics, and aerospace but has also demonstrated unique value in medical applications in recent years.

When considering why the honeycomb-electric-field oil-fume purifier selects the tungsten needle as its core component, one must deeply understand the unique properties of the tungsten needle and its crucial role in the oil-fume purification process.

High-density tungsten alloy is mainly made of tungsten (usually between 85% and 99%) as the matrix, with nickel, iron, copper and other elements added through the powder-metallurgy process. It is characterized by high density, high strength and hardness, good electrical and thermal conductivity, a small thermal-expansion coefficient, excellent corrosion and oxidation resistance, good machinability and weldability, and outstanding radiation-absorption capacity. Due to its unique properties, high-density tungsten alloy has numerous applications.

Tungsten disulfide nanosheet (WS₂ nanosheet) is a two-dimensional nanomaterial with a unique structure. Its crystal structure consists of a layer of tungsten atoms sandwiched between two layers of sulfur atoms, forming a sandwich-like layered arrangement through covalent bonds and van der Waals forces. This structure gives WS₂ nanosheet excellent physical and chemical properties, making it widely used.