3. Beautiful dangerous
When are you arranging a celebration. Balloons can make your work look more beautiful but the beauty of the balloons dangers may lurk if you use hydrogen gas to blow the balloons might cause explosions with a spark of fire. That is the danger. But there are alternatives Helium gas is used to blow the balloons. Because it is an inert gas and it is not flammable, but security was traded to the cost higher.