Rotary vane vacuum pumps are the first choice for vacuum packaging. Dry screw vacuum pumps, vacuum boosters, liquid ring vacuum pumps, claw vacuum pumps and rotary lobe blowers also have precise roles in packaging. Each and every of these delivers its individual unique edge depending upon the precise application. https://vacuum-packaging-machine71246.magicianwiki.com/1186640/details_fiction_and_liquid_packaging_machines