Applicable for electronics like semi-hermetic devices, chips, ICs, metal-processed parts, moisture and oxidation prevention, as well as fabrics, cotton-wool products, etc., for vacuum packaging to reduce package volume and save on logistics costs. Equipped with a special vacuum adjustment valve that can adjust the speed of vacuum extraction based on the different needs of the packaging. Prevents damage to the packaging due to rapid extraction, especially suitable for precision products in the electronics industry. Features inflation functionality to fill the packaging bag with required gas, such as nitrogen for food, fruits, vegetables, seafood, etc., to maintain freshness, original flavor, and shock protection.