CF Industries Holdings, Inc. engages in the manufacture and distribution of nitrogen fertilizer. The company is headquartered in Northbrook, Illinois and currently employs 2,800 full-time employees. The company went IPO on 2005-08-11. The firm is focused on decarbonizing its ammonia production network to enable low-carbon hydrogen and nitrogen products for energy, fertilizer, emissions abatement and other industrial activities. The firm's segments include Ammonia, Granular Urea, UAN, AN and Other. Ammonia segment produces anhydrous ammonia (ammonia), which is the base product that it manufactures (containing 82% nitrogen and 18% hydrogen). Granular Urea segment produces granular urea, which contains 46% nitrogen. UAN segment produces urea ammonium nitrate solution (UAN). AN segment produces ammonium nitrate (AN). Other segment primarily includes products, such as diesel exhaust fluid (DEF), urea liquor and nitric acid. Its manufacturing complexes in the United States, Canada, and the United Kingdom, a storage, transportation and distribution network in North America, and logistics capabilities enable a global reach.