... used in pigment,plastic,rubber industry, SGS,CIQ Inspection approved, Free sample can be provided. factory price carbon black N220, N330, N550, N660 Carbon Black ... tire compound; Tube; Extruding bar, seal and mould rubber product. Carbon Black N660Characteristic: It features lower reinforcing ability, smaller structure, higher ... +/-1.3-1.7 +/-1.3-3.5 +/-1.3 factory price carbon black N220 for pigment