We are one of largest manufacturer of anthraquinone, with annual output 20,000 metric tonnes. Our factoty locates in Zichuan Area, Zibo city, which is famous for its chemical industry, Shandong province, P.R China. Meanwhile, we also manufacture many other kinds of chemicals, such as polyaluminium chloride, caustic soda Lye, aluminium chloride anhydrous and so on. You can get more information from our web: www.eternchem.com