LSB Industries, Inc., through its subsidiaries, engages in the manufacture and sale of chemical products, geothermal and water source heat pumps, and air handling products. The company operates in two segments, Chemical Business and Climate Control Business. The Chemical Business segment manufactures and sells nitrogen-based chemical products, including anhydrous ammonia, fertilizer grade ammonium nitrate (AN), urea ammonium nitrate, and AN ammonia solution for agricultural applications; high purity and commercial grade anhydrous ammonia, high purity AN, sulfuric acids, concentrated, blended and regular nitric acid, mixed nitrating acids, and diesel exhaust fluid for industrial applications; and industrial grade AN and solutions for the mining industry. It also offers blended and regular nitric acid; and industrial and high purity ammonia for various specialty applications, including the reduction of air emissions from power plants. This segment sells its products primarily to the polyurethane, paper, fibers, fuel additives, emission control, and electronics industries, as well as to farmers, ranchers, fertilizer dealers, distributors, and explosive manufacturers. The Climate Control Business segment manufactures and sells a range of heating, ventilation, and air conditioning products that include geothermal and water source heat pumps; hydronic fan coils; large custom air handlers; modular geothermal and other chillers; and other related products to control the environment in commercial/institutional and residential new building construction, renovation of existing buildings, and replacement of existing systems. This segment sells its products principally to mechanical contractors, original equipment manufacturers, contractors, independent sales representatives, and distributors. The company also sells industrial machinery and related components to machine tool dealers and end users. LSB Industries, Inc. was founded in 1968 and is based in Oklahoma City, Oklahoma.