CCS (Copper Clad Steel Stranded Wire) is a composite conductor with a layer of pure copper coated on the outside of a steel core. The copper layer is tightly bonded to the steel core using metallurgical processes, and has the good conductivity of copper and the high strength of steel. It is usually made of multiple strands of copper-clad steel single wires, with a compact structure and excellent mechanical properties.

Compared with pure copper wire, CCS conductors have higher tensile strength, lighter weight and lower cost, while meeting the electrical performance requirements of communications and power systems. Its surface is highly conductive copper, ensuring excellent signal transmission performance, while the steel core gives it excellent fracture resistance.