(1)non--toxic medical grade PVC
(2) one tip, over ear style
(3)CE and ISO13485

1.Different size available,like standard tip,soft tip and super soft tip available for adult and

paediatric, if specially neened ,we can specially make;

2 Different length and color available.We have thick and thin tube.

3 inner keelsons in shape of hexagon ,free of oxygen block even bent;

4 none of stimulation or other untoward effects;

5 tight commissure with oxygen source and better gas tightness.