Enameled Copper Clad Aluminum Wire

https://www.rongdawire.com/products/enameled-copper-clad-aluminum-wire/

Copper Clad Aluminum Wire (CCAW) is an electromagnetic wire product that uses copper-clad aluminum material as its inner conductor and is coated with an insulating paint film on its surface. This type of copper coated aluminum wire combines the advantages of both copper and aluminum metals: copper has good electrical conductivity, while aluminum significantly reduces the material's weight. Therefore, while maintaining high electrical conductivity, copper covered aluminum wiring also features lightweight characteristics.