I’ve been in the situation of dealing with violating Chinese “companies” and you’ll find that even when you have them dead to rights there’s no practical recourse; Chinese brands tend to be no more than a shell for a larger conglomerate and if there is any kind of significant financial liability they declare them bankrupt and resume operations with a new company/shell.
What “significant financial liability” means is around $2M to $5M out of pocket. Anything less than that then they’ll ignore rulings, foreign court orders, etc. and carry on as if nothing has happened.
I’ve been watching this thread with interest; I don’t think there’s much of a stick that can be used to get companies like Creality into compliance and efforts to bring them into line when it comes to the GPL will effectively come to naught.