(1) Green environmental protection products: good cleanliness, atmospheric ozone layer destruction ability index =0, global greenhouse effect ability index =0. (2) Stainless steel alloy cylinders will not be corroded, no pressure relief, no leakage, low maintenance. (3) Passed the fire extinguishing test and certification of Tianjin Fire Research Institute.(4) Fire extinguishing without residue: the fire extinguishing agent below 2um is released, which is easy to dissipate in the air, and its micro-contest is less than the amount of dust that naturally falls in the computer room within a month. (5) Light volume: the volume and weight of other fire extinguishing systems can be reduced by 90%, and do not occupy the protection zone. (6) Easy installation: there is no need for high pressure vessels or complex distribution networks, saving space and expensive installation costs. (7) Convenient design, wide range of adaptation. (8) The service life is up to 10 years, which is better than other types of fire extinguishing agents. Application scenario1. Designed for underground integrated pipe gallery and tunnel fire extinguishing configuration; 2. Fire in power station (room), electrical control room, generator room, cable sandwich, cable well, cable trench, computer room, communication room and other places; 3. Fires in places where diesel oil (except for the -35 diesel), heavy oil, transformer oil, lubricating oil, animal and plant oil and other class C combustible liquids are produced, applied or stored; 4. Surface fires of combustible solid substances in places where combustible solid substances are produced, used or stored.