Our main products are series of carbon black used for rubber products with AONA brand. The total capacity of the company is more than 40,000 tons per year. Our product has passed the quality tests conducted by China National Testing Center. And at the same time, we also had passed the ISO9001 certification with high running efficiency and stable product quality. Main products we offered are N220,N330,N550,N660.It maybe some different from what you require actually, kindly inform us in detail, we will be pleased to re-offer you as per your actual requirements. contact: jackie chu (International business manager)  skype: cqlfly