FAQ

1. Air Source. An external vacuum packaging machine requires an air source, while an internal vacuum packaging machine only needs its own vacuum pump to complete the packaging process. 2. Application Scope. An external vacuum packaging machine does not require extremely high vacuum levels but demands that the packaged products be impact-resistant and aesthetically pleasing; the most critical function of an internal vacuum packaging machine is oxygen removal and preventing microbial growth and reproduction, which requires a higher vacuum level. 3. Structure. External vacuum packaging machine