We are SHANDONG AONA CHEMICAL CO.,LTD and a professional carbon black manufacturer and exporter in china. We are in the line for more than 10years, we have three hard black production lines and two soft black production lines, the total capacity is more than 70,000tons annually. N220,N330,N339 is our main products from our hard black production line, Carry out National standard:GB3778-2003. We hope build a good business relations with you in near future,welcom your enquiry and cooperation. Best regards Peter song Tel£º0086 632 6797069 £¨0£©13465952920 Fax£º0086 632 7711709 EMAIL£ºsongzhaochun2001@126.com MSN: petersong.7808@hotmail.com