Large fireworks should be set off in a relatively empty place without high-voltage lines above;

Put the fireworks on the open space smoothly according to the discharge instructions, and put the fireworks outlet up;

Tear off the top surface of the fireworks display bag and fold it at the edge. Never block it above the exit.

Tear off the fixed strip of lead wire and ignite the lead wire with fire or smoke;

Personnel should evacuate quickly, try to stay away from fireworks, and try not to visit immediately after discharge.

There are other large fireworks that use direct ignition, electric ignition and computer programming.

1, direct ignition method uses open flame or friction ignition to ignite the lead wire, which makes the product catch fire and explode.

2. Use alternating current and direct current to make the electric ignition head generate high heat and explode to ignite the product. This method is widely used. The main process of electric ignition is realized by electric igniter, electric ignition head, conductor, wiring board and external power socket.

3. The method of computer programming is to arrange the ups and downs of each music melody through computer operation, and input instructions according to the product effect, sound and time rhythm. At the time of departure, the computer will complete it one by one according to the established procedures, and the time error will be controlled within a few tenths of a second.