... Manufacturer SGS for quality and quantity Name ,ParameterCarbon black N220Carbon black N330Carbon black N550Carbon black N660Loding Absorption Number(g/Kg)114-12877-8739-4732 ... plastic,rubber,masterbatch,tire,paints,ink,pigments Carbon black N220,N330,N339,N375,N550,N660,N774 etc...... 2012 WEIYI carbon black N220 prices