... 4.BV,SGS,CIQ,COA,MSDS,ISO 2012 market price for carbon black N220, black carbon for sale with competitive price 1.Powder,granular ... has the certain electrical conductivity. It has mainly been used in the carrying tyre, tread rubber, and rubber product with high ... early lamp blacks were not very pure and differed greatly in their chemical composition from current carbon blacks. Since the mid ...