Aluminum balloon is generally a one-way air inlet valve, and then sealed with atmospheric pressure. The structure of one-way intake valve is two thin films, which are long. ? When the aluminum balloon is deflated, insert the straw directly into the air outlet, and the gas inside can be discharged at a deeper level, so that it can be recycled. Aluminum balloons are generally used in entertainment occasions: they can be used as birthday party balloons, toy cartoon aluminum balloons, gift balloons, decorative balloons, advertising balloons, Valentine's Day balloons, Christmas balloons and other holiday balloons.