Cylinder for electro-plating and coating

Disclosed is a cylinder for the use of electro-plating and coating and offering better tracking for tiny concave-convex of external lining so as that an electric current can frequently and evenly fluid and uneven electrification cannot be occurred. The cylinder for the used of electro-plating and coating is that the external shrinks to a surface of perimeter board of an inner cylinder. The feature is that a fillister placed on the surface of the perimeter board of the inner cylinder with deepness small than a diameter of a spirochete. The spirochete made from a fine electric conductive material with expansion coefficient same as or great than the external or the perimeter board of the inner cylinder is located in roll in the fillister.