Please review the attached brochure, titled, "New Fireworks Regulations Brochure" (below), which was distributed by the fireworks manufacturers. All the items in the pamphlet were previously prohibited. The sale and use of "consumer" fireworks was made legal throughout Pennsylvania. The wording was attached to the 2018 tax bill and is now law.
However no one can use on any property without the owner's permission. So that would include all Township property. Additionally the large display fireworks seen at events, (and as well in some backyards), are prohibited as are any other non-consumer fireworks.
The law does regulate the sales to certain times of the year, (if not a permanent structure). However there are no restrictions on when consumer fireworks can be used.
New Fireworks Regulations Brochure