{dede:field.body/} Structure. The external suction vacuum packaging machine is put into the packaging bag of the package through the suction nozzle, and the air is extracted to complete the packaging; the suction type is to directly pump the air in the vacuum chamber into a vacuum and then seal.

Packaging objects. The external vacuum packaging machine is mainly used in the packaging of electronic products and other anti-oxidation products; the internal vacuum packaging machine is mainly used for packaging high vacuum, clean and sanitary products, such as food products.

Scope of application. The external vacuum packaging machine does not require a very high vacuum degree, but requires the packaged products not only to be anti-collision, but also to have a beautiful appearance; the important role of the internal vacuum packaging machine is to remove oxygen and prevent the growth and reproduction of microorganisms, which requires a high vacuum degree.

Four gas sources. The external vacuum packaging machine needs to be connected with a gas source, while the internal vacuum packaging machine only needs to have its own vacuum pump to complete the packaging process.