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pay attention:
(1) Be sure to inflate the aluminum balloon slowly. You can inflate to 90% with an inflator, and then blow with a straw to control the air volume so as not to break. If you encounter two layers of aluminum film sticking, you must stop inflation, gently pull the two layers of aluminum film apart and inflate with your hands, otherwise it will be easily damaged.
(2) Sharp objects, unclean ground, direct sunlight and excessive squeezing can easily damage or burst the sphere
(3) Due to the thermal expansion and contraction of the gas, in winter or when the temperature drops, the aluminum film balloon should be properly inflated; in summer or when the temperature rises, the aluminum film balloon should be properly deflated to prevent it from bursting.