Product used as a 5L, 10L oxygen can
- A fire replacement mask that will protect the respiration and vision of the rescuer should be stored in a fire truck so that it can be quickly delivered to the rescuer at the scene of the fire. - It should be a self-contained (oxygen/air) mask that is independent of the type/density of toxic gas and can breathe on its own regardless of the oxygen concentration. - There should be no failure to wear, a simple structure, and intuitive instruction delivery should be possible in the field. - It should be small and light enough for firefighters to carry multiple.
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