National Oxygen Limited is an India-based company, which is engaged in manufacturing industrial gases, such as Oxygen and Nitrogen. The Company is also engaged in Wind energy generation. It is a supplier of industrial gases both in liquid and gaseous forms. Its products include industrial liquid oxygen, industrial gaseous oxygen, industrial liquid nitrogen, medical grade oxygen liquid, medical grade oxygen gas, high purity nitrogen gas, commercial grade argon gas, high purity argon gas, instrumentation argon gas and dissolved acetylene gas. Its products' applications include blast furnace, copper smelting, manufacture of explosives, heart stimulation, cryogenic preservation, chemical intermediate, marine food processing, automobiles, and cutting and welding. The Company has a capacity of 2,500 cubic meters (m3) per hour of Oxygen/Nitrogen gases and 200,000 m3 per annum capacity of Dissolved Acetylene gas having manufacturing facilities at Pondicherry and Tamil Nadu.