mulia jaya packing sells carbon charcoal bars. carbon charcoal bars are high quality electrodes that are made from the best materials to provide exceptional for all plating solutions whether it is: platinum, palladium, gold, silver, copper, nickel and chrome. carbon charcoal bars Carbon electrodes deteriorate over a period of time & discolor swabs. This discoloration does not affect the quality of the coating or the life of the sponge. contact noble jaya packing to get the best quality and price