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.