Mixing potassium nitrate, potassium perchlorate and potassium chlorate in a fixed proportion, and putting them into an instrument to react into pellets; After pelletizing, bright beads are made and wrapped with a layer of black ignition powder; Put the "coal ball" into the shell of the fireworks and seal it with adhesive tape; Finally, fuse and put on the outer packaging. In this way, the fireworks are finished.

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. With the strengthening of people's awareness of environmental protection, electronic fireworks have also appeared.

Electronic fireworks are actually a projector with a hemispherical main body. At first glance, it is more like an astronomical telescope, projecting in a dim space through its six high-light 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.