Tungsten needles find widespread use in ionizing air purifiers and related devices due to their unique properties that render them well-suited for such applications. The office environment of discharge needles is relatively harsh. Usually, it needs to be raised to a working standard voltage of 4kV or higher (2-3kV high-frequency AC method), so the front end of the discharge needle will bear a very large mechanical energy load, which makes the product easy to The main reasons are damage and short service life.

Tungsten, a highly durable and corrosion-resistant metal with an exceptionally high melting point (ranging from 3390°C to 3430°C), is preferred for several reasons: