amorphous graphite powder FC 30-90% Size 40-325mesh high lubricity,heat-resistance highly resistant to ... acid and alkali Natural Amorphous Graphite PowderFC:30% 40% min, 50%min, 60%min, 65%min, 70%min ... %min, 78%min, 80%min, 82%, 85%min, 88%min, 90%minMoisture: 2.0%max, 2.5%maxSize: 20mesh, 40mesh, 60mesh ...