This machine is suitable for quantitative packaging of powder and small granular materials in industries such as chemical packaging, food packaging, and by-product packaging, such as: Vertical self-weight packaging machines can provide excellent protection for products such as pesticide packaging, veterinary drug packaging, disinfectant packaging, laundry powder packaging, grain packaging, seed packaging, milk powder packaging, condiment packaging, monosodium glutamate packaging, salt packaging, white sugar packaging, and additive packaging.