For clinical emergency tracheal intubation and one-time use during anesthesia.

1. The main raw material of the product is medical grade polyvinyl chloride (PVC);

2. The tube body is made of heat-sensitive material, which will become soft in the airway, not easy to damage the airway, moderate hardness and elasticity, and not easy to bend;

3. The oblique angle of the tip end is a standard angle, and the transition of the melting point is smooth, without burrs;

4. The periphery of Murphy's hole is smooth and has no sharp corners, and it is not easy to damage the mucous membrane;

5. The transition between the cuff and the tube body is smooth and without sharp corners, the cuff is soft, long and wide, and the pressure per unit area is small, which protects the tracheal mucosa.