... /CO2,to make sure inside air quality . MAP lunch box fresh machine.Model :MAP-450 Used pressure :0.6-0.8MpaComposite gas ... 50Hz 1.5KWThe set of modified atmosphere gas mix-sealing machine. Gas replacement double-effect function, use of O2, N2, ... , genuine, extending food freshness and shelf life. The machine applies (raw meat, fish, fresh fruits and vegetables, poultry, fighting products, meat system ...