This positive pressure oxygen breathing apparatus is used for personnel rescue of long breath and visual protection in mining, fire, tunnels, subways, petroleum, chemical and others. It extracts characteristics of the product at home and abroad: small size, light weight, easy to wear. The pressure inside mask is above ambient atmospheric pressure. It can prevent external harmful gases into the mask effectively. Full- face mask is of great vision anti-fog, spacious security vision and good sealing performance.

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