a.Blackening strong b.Tinting strength c.Dispersion large,minuteness d.SGS for quality and quantity e.ISO9001:2000 Manufact. We supply diverse model carbon black, for example N220, N330, N550, N660, N339, etc.1. Type: n220 ,n330,n550.n660.2. Cas no:1333-86-43. Place of origin: china4. Standard: GB 3778-20035. Form: black granule or powder6.Process: wet or dry process7. Usage: maily applied to ...