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1.Face shield size: 21*18cm.
1. Mask small, can be placed in carry, is the world's most widely used CPR breathing mask.
2. They low resistance one-way valve and water filter are combined to block the liquid and secretions, valves and filters together played a barrier to rescue personnel and patient isolation.
3. Giving the casualty doing mouth to mouth artificial respiration, avoid contact with the patient's mouth, nose and face.