Keyuan Petrochemicals, Inc., through its subsidiaries, Ningbo Keyuan, Ningbo Keyuan Petrochemicals, Keyuan Synthetic Rubbers, Guangxi Keyuan and Zhongkexuneng, is engaged in the manufacture and sale of petrochemical products and rubber in the People's Republic of China. The Company's segments include the manufacture and sale of petrochemical products (petrochemical segment) and the manufacture and sale of rubber products (rubber segment). The Petrochemicals Segment includes the manufacturing and sales of mixed light aromatics, mixed heavy aromatics, fine propylene, propane, butane, liquefied petroleum gas (LPG), methyltert-butylether and styrene. The Rubber Segment includes the manufacturing and sales of various rubber products. It manufactures and supplies various petrochemical and rubber products, including petrochemical products, such as Benzene Toluene-Xylene Aromatics (BTX Aromatics), propylene, styrene, LPG, Methyl Tertiary Butyl Ether (MTBE) and rubber products.