... 50% to 90% 3Competitive price 4.Customerized size&service Graphite powderGraphite is a kind of crystalline carbon,it has the ... 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,battery,pencil,paint tubes,metal casting and forging ...