... /Rubber factory Type:N220,N330,N660 Delivery time: two weeks Package: 25kg per bag We can supply carbon black for tyre and rubber ... industry. The type includes: N110,N115,N121,N219,N220,N234,N326,N330,N339,N347 ... ,N351,N375,N539,N550,N660,N762,N774,etc. These carbon black are produced by qualified ...