1.Synthetical graphite. 2.F.C 90%, V.M 4%, S 0.03%, P 0.03% 3.Competitive price, customized size and service Graphite is a king of crystalline carbon, it has the color of iron black and dark grey in natural.It is mainly used for advanced refractory, high temperature and high pressure sealing material, thermal conductive lubricating material such as bricks, crucibles, flexible graphite product, ...