Vacuum chamber is shaped with 304 stainless steel which could avoid of acid and other corrosion. Convenient for users to choose and adjust best, so as to achieve the best packaging effect. The machine comes with 4 wheels, easy to transport, easy to clean and beautiful. Under the circulation of exhauster, improving working effeciency and extend machine's life. It can effectively prevent bacterial reproduction, avoid oxidation, mildew and corruption of items, achieve quality, taste, color and quality, prolong storage period, and facilitate the transportation and export of packaged goods.