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Calcined petroleum coke F.C:98%MIN S;0.5%max
(ArtificialGraphite)Graphitized petroleum coke F.C:98.5%MIN S;0.05%max
Calcined anthracite F.C:90-95%MIN S;0.25-0.3%max
Sythetic Graphite F.C:98.5%MIN S;0.05%max