carbon black used for tyre

dear manager,we shandong aona chemical co.,ltd is one of the leading manufacturers and exporters of carbon black in china.
we produce a series of carbon black,such as:n220,n330,n550,n660 ect.the carbon black is widely used for rubber,tyre,plastic,printing ink and so on.we have got the ISO9001:2000 certification and the total quantity of our company is more than 50,000 mt every year.if you are interested in our products,please don't hesitate to contact me.we will give you professional service.