The socket in the middle of the vertical fireworks lamp is used for fireworks ignition control and program control box. The electronic ignition head is connected with fireworks and used to ignite the performance. The black balls in fireworks are called bright beads. It is made of strontium carbonate, barium nitrate, copper oxide, magnesium-aluminum alloy, aluminum particles, paste powder, hexachlorobenzene, etc. Various colors appear when burning.