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The design is portable, it combines the dust mask and the emergency lamp. When there is an emergency and the power is out, people can not find enough emergency lights to light up the way, especially the corners. But people really need portable lamp. You can open the door and take the lamp out.
You can use the mask for mines or there is fire. It will stop the dust or poisonous gas getting into your body. People can get it easily when there is an emergency. It is very convenient.
Another purpose is to mine workers, to prevent dust inhalation, and may illuminate simultaneously.