... 1.Type: N219, N220, N234, N326, N330, N339, N472, N539, N550, N660, N772, N774 2.Standard: GB 3778-2003 3.Packing ... jumbo bags 4.Usage: Maily applied to various rubber products such as tyres, rubber overshoes, cable, seal ring, tape etc. Moreover they ... -4.8 +/-1.3-5.8 +/-1 Carbon Black for Rubber Tyre