kindly recieve my best regards from china. We are Hebei XiangfeiChemicals Co., Ltd. Our company can manufact all differentchemicald detail of Carbon black Type and ingredient: Carbon blackN220:Loding Absorption Number (g/Kg) 114-128 Absorption Value ofDBP (10-5m3/Kg) 109-119 Absorption Value of compressing sample DBP(10-5m3/Kg) 95-105, Adsorptive Specific Surface Area of CATB (103m2/Kg) 106-116 Adsorptive Specific Surface Area of Nitrogen(103m2/Kg) 114-124 Carbon black N330;:Loding Absorption Number(g/Kg) 77-87 Absorption Value of DBP (10-5m3/Kg) 97-107 AbsorptionValue of compressing sample DBP (10-5m3/Kg) 83-93 AdsorptiveSpecific Surface Area of CATB ( 103m2/Kg) 77-87 Adsorptive SpecificSurface Area of Nitrogen (103m2/Kg) 78-88 Carbon black N550::LodingAbsorption Number (g/Kg) 39-47 Absorption Value of DBP (10-5m3/Kg)116-126 Absorption Value of compressing sample DBP (10-5m3/Kg)83-93 Adsorptive Specific Surface Area of CATB ( 103m2/Kg) 38-46Adsorptive Specific Surface Area of Nitrogen (103m2/Kg) 38-46Carbon black N660::Loding Absorption Number (g/Kg) 32-40 AbsorptionValue of DBP (10-5m3/Kg) 85-95 Absorption Value of compressingsample DBP (10-5m3/Kg) 71-79, Adsorptive Specific Surface Area ofCATB ( 103m2/Kg) 32-40 Adsorptive Specific Surface Area of Nitrogen(103m2/Kg) 30-40 are you interested it ? sincerely feel free tosend your email , fax, get further infermation. my address: xingtaicity hebei province in china. thanking you and waiting to serve youbest wishes