If a similar scenario were considered for a halon seeker, the member's purchase transactions would be deducted from the latest requirement as posted by the member for that halon type. Halons are halogenated hydrocarbons. They are colorless, odorless gases that are electrically nonconductive, leave no residue and are low in toxicity. Three things must come together at the same time to start a fire. Traditionally, to stop a fire you need to remove heat, fuel or oxygen.
Halons stop the chemical reaction necessary for a fire to continue.
Halons do this at low concentrations without displacing oxygen - there is still plenty of air for people to use in the evacuation process. Halon-1301 systems are also typically found in private telephone exchanges operated by hotels and financial services companies. Halon-1211 has been used in portable fire extinguishers that could be located in hotels, office buildings, libraries or even homes. Although this is not a comprehensive list, it provides a good place to start in assessing the halon stocks that may exist within a country. India voluntarily ceased halon production in 1998, however production of halons in Korea and China continues.