carbon black n220 n330 n339 n550 n660 FREE SAMPLES we are Manufacturer SGS for quality and quantity Name ,ParameterCarbon black N220Carbon black N330Carbon black N550Carbon black N660Loding Absorption Number(g ... .10% maxused in plastic,rubber,masterbatch,tire,paints,ink,pigments Carbon black N220,N330,N339,N375,N550,N660,N774 etc...... 2012 WEIYI carbon black N220 prices