Just in case you hadn't seen this follow-up:

https://www.reuters.com/world/middle-east/gold-apollo-says-it-did-not-make-pagers-used-lebanon-explosion-2024-09-18/

And some info even suggests that this B.A.C. company was a shell company owned by Israel:

https://www.nytimes.com/2024/09/18/world/middleeast/israel-exploding-pagers-hezbollah.html

By all appearances, B.A.C. Consulting was a Hungary-based company that was under contract to produce the devices on behalf of a Taiwanese company, Gold Apollo. In fact, it was part of an Israeli front, according to three intelligence officers briefed on the operation. They said at least two other shell companies were created as well to mask the real identities of the people creating the pagers: Israeli intelligence officers.

B.A.C. did take on ordinary clients, for which it produced a range of ordinary pagers. But the only client that really mattered was Hezbollah, and its pagers were far from ordinary. Produced separately, they contained batteries laced with the explosive PETN, according to the three intelligence officers.