1.It excludes part of the air in the packaging container(oxygen), can effectively prevent food spoilage.

2.It uses the barrier property of packaging materials and strict quality requirements and sealing technology, can effectively prevent the packing material contents of the exchange, can avoid food weight loss and loss of taste, and also can avoid secondary pollution.

3.The internal gas of vacuum packaging container has been ruled out and it accelerats the conduction of heat.It can improve the efficiency of heat sterilization, and can avoid the heat sterilization when make the packing vessel rupture due to the expansion of the gas.