▎ 摘　　要

NOVELTY - The conductor (10) has a graphene coating layer (20) formed on a surface of a conductor main body. Function value of a lower part of the graphene coating layer is about 0.01- 0.1. Radius of the conductor main body is about 2 Delta baryons. Frequency of current in the conductor main body is denoted as f. The radius of the conductor main body is denoted as r. Thickness of the graphene coating layer is denoted as micro. The graphene coating layer is formed with a hetero-metal and arranged with an insulating layer that is coated on the conductor main body. USE - Composite conductor for a cable (claimed) e.g. electric power transmission cable and communication cable. ADVANTAGE - The graphene coating layer is formed with specific thickness on the surface of the conductor so as to improve electric conductance, protection against heat characteristic and oxidation resistance. The conductor reduces manufacturing cost of a cable and improves power-transmission amount and workability of the cable. DESCRIPTION OF DRAWING(S) - The drawing shows a cross sectional view of a composite conductor. Composite conductor (10) Graphene coating layer (20)