Our main products Pigment Carbon Black of C Series are all Channel Black, Granular Form and Powder Form, used in Printing Ink, Painting and Coating, specially for Automotive Paints. Within these types, the three grades are equivalent grade to Degussa according to testing result issued by DEGUSSA SHANGHAI TECHNOLOGY CENTER FP COATING LAB. Among which C111 equals Special Black 6#, C311 equals Special Black 4#, C312 equals Printex U.