Carbon black N330 N220 N550 N660,N326,N375 1.black powder granular pignent 2.usage:rubber,plastic etc Carbon black 1. Type: n220,n330,n550.n660,n326,n3752. Place of origin: china3. Standard: GB 3778-20034. Form: black granule or powderItems N220 N330 N550 N660 Iodine Absorption Number g/kg121 +/-582 +/-543 +/-436 +/-4DBP Absorption Number 10-5m3/Kg114 +/-5102 +/-5121 +/-590 +/-5DBP Absorption ...