... Description General Anesthesia Machine with Built-in IPPV and SIMV Mode Anesthesitic VentilatorBuilt-in anesthesia ventilator with IPPV and ... I:E ratio,Airway pressureO2 + N2O flowmeterHypoxic guard system, keep oxygen concentration isn`t lower than 25% ... Advantage: Classical multifunctional anesthesia machine, economic in cost, easy in operation, Built-in anesthesia ventilator with IPPV and SIMV mode, ...