Detailed Product Description Our Channel Black: SB1#, C111, C311, C312, C611, C611-1, C611-2, C655. They are also generally used for Printing Ink, Master Batch, Paints, Coating and so on. Several grades of these can replace Degussa's products, such as SB1# can replace Degussas FW200, C111 can replace Degussa's SB6#, C311 can replace Degussa's SB4#, C312 can replace Degussa's Printex U.If you are ...