... Coke( Artificial Graphite/synthetic graphite)Index1(1-5mm)2(1-5mm)3(1-5mm)4(1-5mm)5(1-5mm)6(0.2-1mm)7(0-0.2mm)8(0.175-2mm)F.C (Min ... )99.2%99%98.5%98%98.5%97 ... , 0.2-1, 0.3-1, 1-4, 1-5, 1-6, 4-10, 5-10, 1-8, 4-8, etc. Electric calcined Carburizer (Artificial Graphite/synthetic graphite)Index9(1-5mm)10(1-5mm ...