Specifications:1) Length of seal: 650mm2) Height of shelf: to seal gate3) Diameter of shelf: 420mm4) Performance efficiency: 1-2 times/minute5) Vacuum pump: double pump XD-0206) Total weight: 150kg7) Total power: 2.5kw8) Applications:a) Large packageb) Jujubec) Electronic productsd) Pine nutse) Food that needs protection from oxidization