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Simple oxygen mask, with 2m oxygen tubing.
Medical concentration, with elastic strap, adjustable noseclip.
Mask in two colors: Green, white
Venturi Mask, with 2m oxygen tubing
The oxygen concentration be selected from 24% to 50% in seven level:24%,26%, 28%, 30%, 35%, 40%, 50%, two diluter in different color, the white one for medium concentration.
Packed with plastic bag or blister