1：The pourdensity is only suitable for controlling the quality of these carbon products which are made by wet method pelletizing.
2: All the products have no impurities.
3: Ash Content of the carbon black of non slurry pelletizing should ≤0.5%， Ash Content of the carbon black of slurry pelletizing should ≤0.7%
4: All the products'500um Sieve Residue should ≤0.0010%
5：All the top grade products'45um Sieve Residue should ≤0.050%， all the qualified grade products'45 um Sieve Residue should ≤0.100%
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