What's the impact of going to the United States now?

American companies can ask China to withdraw its products from the American market, and bring an international lawsuit in China to revoke this patent, provided that the filing date of American companies is earlier than that of China, that is to say, people invented it first. The basis of prosecution is that this product was born before your application, so your original invention is not novel, and the Patent Office should take it back. I don't know where to sue. If American companies are too troublesome to sue, you can at least have a patent right in the China market.