Our main products are series of carbon black products for rubber use which brand is AONA,with the total capacity of more than 40,000 tons per year. We are located in the south of Shandong provice,which has sufficient quality raw material oil.The products have passed the sampling tests conducted by China National Testing Center for carbon black product. With the high running rate of the equipment and stable product quality, Aona company has got ISO9001-2000 certification. we can offer you many kinds of carbon black with good quality and low price,If you are interested in,please feel free to contact us.we can offer you N220 TO N774 . best regards paul(export manager) email:aonagroup@yahoo.com.cn