Features: 1) Rich N2 fire extinguishing device is a knew kind of fire-fighting device developed by the company 2) It can separate the O2 and N2 in the air 3) The fire-fighting principle by using this kind of device is sending the output N2 to the protection area, dilute or replace the N2 and O2, thus the protection area will be in the status of O2 free or poor, destroy the necessary conditions for fire break out 4) With simple process flow, compact structure, saves investment cost 5) With small area occupy, and can be installed indoors 6) High automatic level can continue running without personnel, convenient and quick start up and shut down 7) With few motions parts and damageable parts, simple maintenance 8) With stable, reliable, and safety running