Fireworks wholesale market. Cold light fireworks are a kind of chemical products. As entertainment products, pyrotechnics are used as raw materials to produce acousto-optic colors. They are often used for grand ceremonies or performances, and also for ball games. The fireworks used by fans are called cold light fireworks. You can buy it at the fireworks wholesale market. When buying "cold fireworks", you must choose regular manufacturers to buy, pay attention to the production date and shelf life when buying, and refuse to buy "three noes" and expired products; Don't set it off indoors. Pay attention to safety when setting it off.