The product is produced by impregnation method. The whole line of the equipment is under the protection of reducing gas. The feeding of the mother rod is carried out under vacuum. The copper water impregnation and rolling process are completely isolated from the air. The product has extremely high conductivity and thermal conductivity, good weldability, excellent plasticity and ductility, excellent cold working performance and no magnetism.The products are widely used in ultra fine wire, enamelled wire, electromagnetic wire, flat angle wire, profiled wire, audio wire and other fields.