Because the chemical stability of carbon using high temperature and good conductive. It has been widely used in machinery, metallurgy, chemical industry, national defense, casting, nonferrous alloy, light and others. Especially black carbon rods are also used as ceramic, semiconductor, medical, environmental protection, laboratory analysis and becomes the most widely used metal materials today. When we cutting steel, we do not need to use flammable, explosive like oxygen acetylene flame, we are pay less and more safe to use. You can use the method of processing a variety of arc cutting to process the metal which can not use gas cutting , such as cast iron, stainless steel, copper, aluminum, high efficiency, and can obtain the ideal effect.