Fireworks are also called fireworks, fireworks, fireworks and firecrackers. According to "China Fireworks and Firecrackers Standard-Safety and Quality", fireworks and firecrackers are defined as entertainment products that use pyrotechnics as raw materials and produce acousto-optic colors. Working people in China invented it earlier, and it is often used for grand ceremonies or performances.

Fireworks are actually similar in structure to firecrackers, and they all contain black powder and medicine. In order to achieve good performance, fireworks and fireworks bombs are filled with a lot of gunpowder for launching and explosion. For example, a fireworks bomb with a diameter of 20 cm will explode only when it rises to a height of about 200 meters after launch, and the radius covered by these points can be about 80 meters.

Type:

There are many kinds of fireworks. According to the discharge effect, there are mainly 13 categories: flower spraying, spinning, spinning, rocket, bead spitting, small fireworks, smoke, modeling toys, combined fireworks, thread incense, friction guns, fireworks bombs and so on.

Specifically, it can be divided into cold fireworks, fireworks, potted flowers, Roman candles, rockets, electro-optic fireworks, stage fireworks, cold fireworks, instant fireworks, torch fireworks, toy fireworks, firecrackers, stage fountains, shelf fireworks and daytime fireworks. In addition, the large-scale fireworks produced in Liuyang and Wanzai are mainly made for the viewing of large-scale fireworks parties.

The main categories are "fireworks subtitles", "fireworks bombs", "potted flowers", "rockets", "colorful steam wheels" and "high-altitude fireworks", with dozens to hundreds of categories and specifications every year.

With the strengthening of people's awareness of environmental protection, electronic fireworks have also appeared. Electronic fireworks is actually a projector, the fuselage is hemispherical, at first glance it feels more like an astronomical telescope. Projected in a dark space by the above six high-brightness LED lenses. There is a big lens, four small lenses, and a lens that can rotate 180 degrees. All the lenses are protected by a transparent spherical cover. And the base has a row of operation buttons.