I would like to use hydrogen gas balloons, aluminum foil balloons, aluminum film balloons, I do not know the two kind of good
If you don't believe it, you can take an aluminum foil ball and rub it with your hands to rub off the surface. Inside it is a thin layer of PE filmAs for the quality, it is not the appearance.
Oh, is there any difference between an aluminum foil balloon and an aluminum foil balloon?Two names that are separated by one thingActually, it is a layer of silver powder on the top of PE composite film
The part of the force that the ball bears is the PE composite film. It is not the reflector outside
