1. DZ300-A household vacuum sealing machine is a small machine which can be used for minimum vacuum packing of food in a family or a supermarket to protect foods from going mouldy. 2. Function to advance freshness. Specification: Model : DZ-300A Vacuum Cpacity : 0.035 Mpa Width of Sealing : 40-300mm Power : 220V/50Hz Sealing Time : Number display, and auto control