1. Patent technology of integrated molding, high strength, not prone to falling off and being separated, good flexibility. 2. It can endure high temperature and high pressure disinfection, reusable. 3. Joints are made with injection molding with no gas leakage. 4. Mainly used for operation patients in anesthesia and oxygen; patients after recovery. 5. Support and care for patient with severe postoperative respiratory. 6. Free options among water trap, Y type joint, L-shaped connector, masks, breathing bags, etc.