Due to safety requirements at factories in China, the maximum amount of shells permitted to be sorted in an assortment is 6. This makes all the assortments very undesirable and frustrating to purchase.
I am a factory direct importer of my own authorized line of display fireworks. I have never heard of a safety regulation limiting shell assortments to 6 types per assortment. The assortments that I import have
2" 12 effects x 4 = 48 shells
3" 12 effects x 2 = 24 shells
4" 18 effects x 1 = 18 shells
5" 12 effects x 1 = 12 shells
6" 9 effects x 1 = 9 shells
It could be a timing logistics thing to get the production done or a cost factor but don't think it is a regulation limiting the number of shells in an assortment
