Features of the machine:It is a small exhausting and sealing machine which can be used to seal plastic bags with digital control, heat sealing time and overheatig automatic alarm device .This new kind of packaging is enviromental . Because once the bag is pumped in the low vacuum, it is immediately sealed with high vacuum and minimal residual air. Therefore it could prevent propagating bacteria and other microorganisms, and aviod oxidating , mildew and rot. Meanwhile after the soft goods are vacuum—packaged, the packaging size is reduced and easy to transport and reserve. The advantage of it is energy-efficient, small size, light weight, widely used and easy to operate. So it is the ideal appliance of supermarkets and family to preserve fresh foods.