1 gasoline salute. It is mainly mixed with gasoline and oxygen, and the electronic lighter makes sound.

2 mixed gas salute. Oxygen and liquefied gas are mainly mixed, and electronic ignition rings.

3 electronic salute. It mainly consists of an independent explosion head, a trigger electroacupuncture and a booster circuit. High voltage penetrates the air discharge between electrodes, and at the same time, it produces electric sparks and sounds. High-voltage discharge will also produce a large number of negative ions to help purify the air.

4 firecrackers salute. Everyone knows this.