... .black powder or granular 2.for tyre industry 3.BV,SGS,CIQ,ISO,COA,MSDS 4.Free sample manufacture of carbon black N330 for tyre industry1.black ... powder or granular 2.for rubber industry 3.BV,SGS,CIQ,ISO ... compound, can improve the tyres collapse, flowers, split. manufacture of carbon black N330 for tyre industry