What kind of fireworks is the silver fountain?

Silver Fountain, fairy wand and other "cold fireworks", also known as cold light fireworks, are a kind of fireworks products. In the process of discharge, the flame (spark) temperature drops rapidly, to about 80℃ at a distance of 20 mm from the injection port and to about 40℃ at a distance of 50 mm from the injection port, so it is commonly called cold light fireworks.

The silver fountain lights up first, and then it will emit colorful fountains (all kinds of Mars).