Hope this is correct place to post, I have been looking for a place to contact you, the old forum thread: Contact a moderator doesn’t seem to be available in the new forum.
I have a range of BMS communication boards that allow communication with Cerbo GX, made here in sunny Australia.
There are a couple of ways, the normal route is a request via one of the Victron sales managers where you primarily hope to distribute - Contact - Victron Energy
Ideally you already have some units in the field that are connected to VRM to show that they are working.
That Sales manager should also provide you with the Victron BMS-Can protocol specification and compliance checklists (if you don’t already have them).