（1）Due to the lack of contractility of the aluminum film balloon, it is essential to inflate it slowly, using a pump to reach 90% fullness to prevent it from bursting. If there is a situation where the aluminum film is stuck together, it is necessary to stop inflating and gently separate the two layers of aluminum film before continuing to inflate, or it is easy to damage the balloon.

(2) Sharp objects, dirty ground, direct sunlight and excessive compression can easily cause damage or rupture to the spheres.

(3) Due to the thermal expansion and contraction of gases, in winter or when the temperature drops, it is necessary to appropriately inflate aluminum film balloons; in summer or when the temperature rises, it is necessary to release the air appropriately to avoid bursting. Generally, after charging helium or hydrogen, it can float for 6-14 hours, so helium or hydrogen must be charged on the day of use (when charging hydrogen, safety must be carefully noted!)

Aluminum foil balloons are not recommended to be inflated with a powerful electric air pump, as it is easy to overinflate and burst the balloon!