This is actually a great example of the disadvantage the global IP system places China in..
If the Chinese are doing as you say, which they might be doing already, they would not go about broadcasting this. After all, there still would be repercussions for companies selling their product outside of China using this equipment. If this was done quietly, no one would be the wiser. I would not be surprise that this is already underway. How would a Western company even be able to get the evidence to file a claim?