Make and Offer Portable Handheld Household Food Vacuum Sealer Sealing Machine From Zhejiang Tianyu industry Co. Ltd Factory.Portable Handheld Household Food Vacuum Sealer Sealing Machine Is originally used by food packing companies.The technique prevented spoilage and prolong the shelf life of food products, especially ones transported over long distances. It not only hindered the growth of bacteria and mold, but it also kept food fresh and prevented freezer burn. Vacuum sealing is still used for the exact same purpose today. It's a convenient and economical way for households to preserve, protect, store their.