Har ila yau ana kiran coil ɗin alumini mai launi mai launi wanda aka riga aka yi masa.Kamar yadda sunan ya nuna, shi ne don fenti da kuma launi saman saman aluminum substrate.Yawanci ana amfani da su ana amfani da coil ɗin aluminium mai launin fluorocarbon mai launi da polyester mai rufin alumini mai rufi.