We are pleased to introduce you that we are a specialized manufacturer and exporter for carbon black in China,we sincerely hope to establish business relations with your esteemed corporation. and the items of carbon black we can offer are mainly N220.N550,N330,N660 if you have interesting, please kindly notice us by the following way: tele:86-632-7782003 fax: 86-632-7711709 email:wd_234@hotmail.com yours faithfully ms zhangjing