Perfluorohexanone (FK-5-1-12) is a new type of environmentally friendly and clean fire extinguishing agent, which is used to replace Halon, hydrofluorocarbons (HFC) and perfluorinated compounds (PFC) and other series of fire extinguishing agents. Stored as a liquid and evaporates as a gas, it leaves no residue and is non-conductive, which helps to protect valuable paper documents and electronics. Perfluorohexanone has great environmental characteristics, does not destroy the atmospheric ozone layer, and has an extremely low GWP (global warming potential) value.