... 20years manufacture experience ISO9001:2000 certificare We supply diverse model carbon black, for example N220, N330, N550, N660, N339, etc. ... process7. Usage: maily applied to various rubber products such as tyres, rubber overshoes, cable, seal ring, tape etc. Moreover ... shoes, precipitated or fumed silica has been used as a substitute for carbon black in reinforcing ability. Silica-based fillers are ...