What is the principle of the salute used in the wedding ceremony that can shoot tidbits and mix noise when launching?
What you said may be right. It's called a courtesy gun. It uses electricity or batteries. When it is made, the air is pumped out and the ribbon is stuffed in. When it is started by electricity or batteries, the strong air pressure will make noise and highlight the ribbon. I am a fireworks manufacturer, specializing in wedding music fireworks. You can contact me. qq376532506