CF Industries Holdings, Inc. is one of the largest manufacturers and distributors of nitrogenous fertilizer and other nitrogen products globally. The company's principal nitrogenous fertilizer products are ammonia, granular urea, urea ammonium nitrate solution and ammonium nitrate. CF Industries is a leading nitrogen fertilizer producer in North America. The company operates two of the largest fertilizer complexes in North America, one in Donaldsonville, Louisiana, United States and the other in Medicine Hat, Alberta, Canada.