... and quantity e.ISO9001:2000 Manufact. We supply diverse model carbon black, for example N220, N330, N550, N660, N339, etc.1. ... 70.70.70.70.7Fine powder content ≤%101010101010101045μm Sieve Residue ≤mg/kg10001000100010001000100010001000500μm Sieve Residue ≤mg/kg1010101010101010ImpurityNoneNoneNoneNoneNoneNoneNoneNonePumping Density kg/m3355± ... .52.2±1.53.7±1.5 Rubber with carbon black N220,N330,N339