Fine and ultrafine tungsten wires are thin wires made from tungsten metal, a hard, dense, and heat-resistant material. Fine tungsten wires typically have a diameter between 0.001 - 0.010 inches (0.025 - 0.254 millimeters), while ultrafine tungsten wires have a diameter of less than 0.001 inches (0.025 millimeters). These wires are often manufactured through a process called drawing, where a larger tungsten wire is pulled through a series of dies to progressively reduce its diameter.

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Fine and ultrafine tungsten wires are highly resistant to corrosion, and they have a high melting point and good electrical conductivity. Due to their unique properties, they are widely used in many industries: such as electronics, mobility, health care, energy technology, aerospace & defense etc.