... n220 n330 n550 n660 1.black powder or granular 2.for tyre industry 3.BV,SGS,CIQ,ISO,COA,MSDS ... black N330 for tyre industry1.black powder or granular 2.for rubber industry 3.BV,SGS,CIQ,ISO,COA,MSDS4.Supply ... 5-3.5Extension% ≥+10-10-10+10Map Modulus at 300%-2.5 +/-1.3-1.7 +/-1.3-1.7 ... +/-1.3-3.5 +/-1.3Characteristics of vulcanized rubber 1. High reinorcing2. Low modulus3. Good elongation and resistince ...