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Press Release

LSB INDUSTRIES’ SUBSIDIARY SIGNS EXTENSION OF AGREEMENT TO PURCHASE ANHYDROUS AMMONIA FROM KOCH NITROGEN INTERNATIONAL SARL

Oklahoma City, Oklahoma……February 25, 2010….. LSB Industries, Inc. (NYSE:LXU) announced today its El Dorado Chemical Company subsidiary (EDCC) has signed an extension of EDCC’s anhydrous ammonia agreement with Koch Nitrogen International SARL (Koch). Under the extension, Koch agrees to supply certain of EDCC’s requirements of anhydrous ammonia through December 31, 2012. Anhydrous ammonia is the principal raw material used by EDCC at its El Dorado, Arkansas chemical plant facility.

LSB is a manufacturing, marketing and engineering company. LSB’s principal business activities consist of the manufacture and sale of commercial and residential climate control products, such as geothermal and water source heat pumps, hydronic fan coils, large custom air handlers, the manufacture and sale of chemical products for the mining, agricultural and industrial markets, and the provision of specialized engineering services and other activities. LSB Industries is included in the Russell 2000 Index and the Russell 3000 Index.

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