... /CO2,to make sure inside air quality . MAP lunch box fresh machine.Model :MAP-450 Used pressure :0.6-0.8MpaComposite ... freshness and shelf life. The machine applies (raw meat, fish, fresh fruits and vegetables, poultry, fighting products, meat system, aquatic products ... pasta products, Chinese medicine, etc.), can achieve a high-grade fresh shelf-life, food safer does not affect the taste of ...