Copper Clad Aluminum Alloy Wire is a new materials nowadays. it is used in a wide range of the communication material, coaxial cable, power cable, and making the shield braiding of the cable, CCAM bare wire has the advantages of with the same transmission of pure copper when the frequency is under 5Mc. Because the information transmission is centered on the surface of the copper and CCAM surface is electroplating with the pure copper. The ccam is a kind of composite materials which has the good conductivity, light, easy for carry, corrosion-resistant, enlarge, etc.