Enamel Insulated Wire

https://www.rongdawire.com/products/enameled-magnet-wire/

Enamel Insulated Wire
Enameled wire refers to a type of wire that uses metal wire as a conductor, is coated with insulating paint on its surface, and is cured into insulated wire after baking.

Enamel wire can isolate current and act as a conductor in electrical equipment. At the same time, it has certain high-temperature resistance and mechanical strength, suitable for electrical equipment with high temperature, high frequency, and high voltage.