Simple and practical Fast response expiratory valve makes patients breathe easily and freely, reducing man-machine confrontation It has the functions of synchronous atomization, intelligent sputum suction and manual ventilation The standard basic breathing mode can meet the needs of different types of patients, and the advanced breathing mode can be selected Ventilation mode Standard configuration：VCV、PCV、SIMV-V、SIMV-P、 Backup mode（VCV、PCV），sigh Optional：PRVC、SIMV-PRVC