The present invention provides a radiator that consists of a plurality of f
ins, one side of each fin has at least one wing parallel relative to the
side, the wing is disposed spaced from the fin. The wing has protruding
parts disposed approximately perpendicularly to the wing. The fin has
slots positioned relative to a corresponding protruding part. The
protruding parts engage with the slots and the protruding parts are bent
such that the fins are combined into a radiator. The radiator has
following characteristics: simple structure, easily assembled, robust,
easily formed, and material-saving.