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This portable rescue product is small and could be reuse through substitute the air bag. If you cannot flee from the scene, you can put this on your hands. Break the air bag while the rescue team arrived, the air bag will release a special gas to let the rescue dogs know where you are. This improves the efficiency of rescue mission. If the victim has wounded, he or she can send out signal without waste too much energy blowing whistle.
CHANG,JIA-YU LIN,LIANG-JUN ZHAN,ZI-LIN HUANG,CHANG-RUEI