National Fertilizers Limited is an Indian central public sector undertaking and the largest government-owned-Urea fertilizer-producer in India. It is a Navratna company, with the Government of India owning a majority stake. Incorporated in 1974, NFL comes under the administrative control of the Ministry of Chemicals and Fertilizers, and is the second largest producer of the key fertiliser urea in India. NFL has five gas-based ammonia-urea plants viz Nangal and Bathinda in Punjab, Panipat in Haryana and two at Vijaipur. Wikipedia