Can patents work?

Well, let's see if they have applied for an international patent. If they do, they can't. If not, they can. Every country has its own patent protection. International patent application is time-consuming and expensive (at least 654.38 yuan +0.5 million yuan), so the chances of application are still great. I suggest that you can send me the information, and I will help you do a free search here. I am the patent holder.