In the second century in China the first "fireworks" are thought to have been born. They threw bamboo stalks into a fire and they would EXPLODE with a bang because of overheating of the hollow air pockets in the bamboo. The Modern colored fireworks are thought to have been invented in the 1830's in Europe.
In the 2016 US Census Bureau report $296.2 million worth of fireworks were imported to America from China.
98-99% of all fireworks purchased in the US are imported from China.
Apparently that is something else China can make better cheaper.