MSI is the premiere manufacturer of the world's most advanced breathing simulator and cutting edge surface and underground rebreather systems for self escape, high rise breathing, or rescue missions.Their rebreathers are built with one purpose - to get you home. They are the longest lasting SCSR and the only one that allows for VoiceCommunications without exposing the user to a hazardous environment. Their rebreathers are used as self escape respirators, and high rise escape breathing devices. They have also developed the world's most advanced breathing simulator.

Mine Survival, Inc

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