A. High Carbon : 99%~99.99%.
B. Low Sulphur: 0.01% ~ 0.05%.
C. Low Nitrogen : 50 PPM ~ 300 PPM.
D. High absorptivity rate: 92% ~ 98%.
E. High absorption speed: much faster.
F. High graphite crystal nucleus and high graphitization degree.
G.Stable carburetion, good absorption rate.