Fireworks 2
Pyrotechnic articles are articles containing an explosive substance or an explosive mixture of substances designed to produce heat, light, sound, gas or smoke or a combination of such effects through self-sustained exothermic chemical reactions.
烟花爆竹
烟火制品是指含有爆炸性物质或爆炸性混合物的物品，旨在通过自我持续放热的化学反应产生热、光、声、气、烟雾等效果之一或者其组合。
