There are many types of fireworks. According to the discharge effect, there are mainly thirteen categories: spray flowers, rotation types, rotating lift-off types, rocket types, spitting beads, small fireworks, smoke, modeling toys, combination fireworks, incense, Friction cannons, fireworks bombs, etc.; specifically, they can be divided into cold light fireworks, fireworks bombs, potted flowers, Roman candlelight, rockets, electro-optical flowers, stage fireworks, cold fireworks, instant fireworks, torch fireworks, toy fireworks, firecrackers, stage fountains, shelves There are more than 3,000 fireworks and dayscape fireworks.
In addition, the large-scale fireworks produced in Liuyang, Wanzai and other places are mainly produced for large-scale fireworks parties. The main categories are "firework subtitles", "firework bombs", "potted flowers", "rockets", "big fire wheels" and "mounted fireworks". There are dozens to hundreds of categories and specifications every year.
Hazards of setting off
General fireworks will release a lot of air pollutants when setting off, such as SO2, NO, NO2, etc. and dust. These gases can cause environmental problems such as acid rain; It is understood that setting off fireworks and firecrackers will produce sulfur dioxide, nitric oxide, nitrogen dioxide and other gases. These toxic and harmful gases are invisible "killers". When gunpowder smoke fills the air, these gases can cause certain damage to the respiratory system and nervous system, and can also be irritating to the eyes. Some of them can contribute to the occurrence or development of some chronic diseases.
Fireworks and firecrackers not only bring embarrassment to urban sanitation, but also bring safety risks. Because many people set off firecrackers everywhere, it took sanitation workers the next day to clean them up. Once the fire is not extinguished, under the current long-term drought conditions in the northern region, it is extremely easy to ignite dry trees and grass and cause fires. If you do not pay attention to personal safety when using it, especially for some naughty children, it can easily endanger the lives of people around you, and even cause explosions, fires and other problems.