CF Industries Holdings, Inc. is the manufacturer and distributor of nitrogen fertilizer and other nitrogen products. The Company’s nitrogen fertilizer products include ammonia, granular urea and urea ammonium nitrate solution (UAN). The Company’s other nitrogen products include ammonium nitrate (AN), diesel exhaust fluid (DEF), urea liquor and aqua ammonia. The Company’s customers include cooperatives, independent fertilizer distributors and industrial users. It operates seven nitrogen fertilizer production facilities in North America. The Company owns four production facilities in the Central United States, one in Medicine Hat, Alberta, Canada and one in Courtright, Ontario, Canada. It also has a 75.3% interest in Terra Nitrogen Company, L.P. (TNCLP) and its subsidiary, TNLP, which owns a nitrogen fertilizer facility in Verdigris, Oklahoma.