CF Industries Holdings, Inc. engages in the manufacture and distribution of nitrogen fertilizer. It owns and operates nitrogen plants and serves agricultural and industrial customers through its distribution system. It operates through following segments: Ammonia, Granular Urea, UAN, AN, and Other. The Ammonia segment produces anhydrous ammonia, which is company's most concentrated nitrogen fertilizer product as it contains 82% nitrogen. The Granular Urea segment produces granular urea, which contains 46% nitrogen. The UAN segment produces urea ammonium nitrate solution, which is a liquid fertilizer product with a nitrogen content from 28% to 32%, is produced by combining urea and ammonium nitrate. The AN segment produces ammonium nitrate, which is a nitrogen-based product with a nitrogen content between 29% and 35%. The Other segment includes diesel exhaust fluid, nitric acid, urea liquor and aqua ammonia. The company was founded in 1946 and is headquartered in Deerfield, IL.