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How to use hydrogen in wedding balloons?
Hydrogen is not recommended because it is flammable and explosive. If you are not idle, I suggest you add helium, which won't explode and can fly like hydrogen. Helium balloons were bought at the wedding company, but they were more expensive, a flying balloon was 5~ 10 yuan. If you can find a gas filling factory, it will cost about 3 yuan to fill the balloon yourself. I hope it can be adopted.