Graphite Electrodes are manufactured with high quality raw materials, including the petroleum cokes and the coal tar pitch,through the process of calcining,dosing,kneading,extruding,baking, graphitizing, machining etc. And nipples are manufactured with the technology of triplicate impregnation and quadruple baking. we can supply all kind of graphite electrodes, such as Regular Power Graphite Electrodes,High Density Graphite electrode,High Power Graphite Electrode,Ultra-High Power Graphite Electrodes,etc. if you are interested in these items, please feel free to write to me ethan_chuan AT yahoo.com.cn. or we can chat through msn: ethan_chuan AT hotmail.com so that i can give you the specifications. Also, we can also manufacture as per your requirement.