Pakistan Oxygen Limited manufactures and sells industrial, medical, and other gases in Pakistan. It operates through two segments: Industrial, Medical & Other Gases; and Welding and Others. The company offers liquid and compressed medical oxygen, nitrous oxide, Entonox, and specialty medical gases; medical air, vacuum, and AGSS plants; liquid oxygen, nitrogen, argon, and carbon dioxide gases; and pipeline and trailer hydrogen gases, industrial pipelines services, and dry ice. It also markets medical gases alarm systems, high precision flowmeters, suction injector units, vacuum controllers, oxygen therapy products, Entonox delivery systems, manifolds, patient bedhead units and ICU beam systems, operation theatre (OT)–pendants, and fully equipped modular OT; and provides consultation design, installation, safety, quality, risk analysis, training, and other services related to medical gas pipeline systems. In addition, the company offers compressed oxygen, nitrogen, argon, air, hydrogen, and carbon dioxide gases; aviation oxygen and dissolved acetylene gases; high purity, research-grade, and sterilization gases; gaseous chemicals; calibration, argon, and welding gas mixtures; refrigerants; and remote telemetry, asset tracking system, hand sanitizer, and footwear disinfection solutions. Further, it provides welding consumables and machines; and gas regulators, cutting and welding torches, cutting machines, abrasives, electrode holders, welding cables, gas control equipment, auto-darkening helmets, flashback arrestors, welding and cutting outfits and accessories, and welding safety and personal protective equipment. It serves the oil, chemical, food and beverage, metal, glass, medical, and healthcare sectors. The company was formerly known as Linde Pakistan Limited and changed its name to Pakistan Oxygen Limited in February 2018. The company was founded in 1935 and is headquartered in Karachi, Pakistan.