Bг¶ller Pyro Cracker: China

In Europe, these usually fall under Category F2 (adult fireworks with a safety distance of at least 8 meters). Specialized versions, like those from manufacturers like Funke Fireworks , may be categorized as P1 sound generators , requiring a 20-meter safety distance due to higher pressure effects.

In the standard hierarchy, Pyro Crackers are smaller than "A-Böller," "B-Böller," "D-Böller," and the massive "Super-Böller". China BГ¶ller Pyro Cracker

The concept of the "China-Böller" (Chinese firecracker) traces back to the invention of gunpowder in China during the Song Dynasty (960–1279 AD). Early "natural" firecrackers were simply bamboo stalks ( baozhu ) that exploded when heated. In Europe, these usually fall under Category F2

The ends are often plugged with clay (bentonite) or crimped paper to contain pressure, which creates the "bang" when it finally ruptures. The "Pyro Cracker" Variant The "Pyro Cracker" Variant Multiple layers of stiff

Multiple layers of stiff paper (often red) rolled into a tight tube.