We also supply N219,N234,N326,N375 models of carbon black,if you have any need on these products,please feel ... free to contact us. Carbon Black N351Product name :Carbon BlackCAS No:1333-86-4HS Code:28030000Appearance:Black Powder or GranularPacking: 25 kgs ... .Best RegardsJoanne LiuTEL:86-371-65336568 FAX:86-371-65336188 Carbon Black N351