Almost any type of plastic that can be manufactured (and even some that otherwise sort of cannot) can also be 3d printed and almost all are available as filaments. Some of these filaments are very difficult to print, or very expensive, or very hard to find, or all of the above, but if you need 3d printer filament that meets any particular certification or material needs, there’s probably a filament for that, and it likely has official certification too. 3d printing is being used everywhere now, commercially and industrially. It’s not just for home-gamers anymore.

And even if you don’t find something you can print that will quite meet the same technical level of certification, there are still plenty of easy to print filaments that have quite good properties for things like flammability. It’s good to keep things like that in mind though, especially if you’re the sort of person who just defaults to PLA or PETG for everything. (I’m guilty of this)