First of all, it is clear that the process of determining patent infringement is a very complicated process, and it does not necessarily mean there is infringement just because it “looks like it.” The determination of patent infringement is made by comparing the technical solution recorded in the "claims" in the patent authorization disclosure document with the physical object of the infringing product. Therefore, you must first read the technical solution recorded in the "claims" of the patent, and then compare it with the product you produce. If the product you produce is different from the technical solution recorded in the "claims" , the working principles are also different, and the effects are also different, so generally there should be no problem of infringement of the patent rights of the patent.
Secondly, patent law is national law. China’s patent law covers mainland China, which means that patented technologies authorized in China are protected in mainland China.
Finally, I would like to remind you not to be afraid of products with patents. If someone tells you that you have infringed on their patent, don’t panic. First, confirm whether the patent is still valid. After confirming that the patent is valid, study the claims of the patent. technical solutions and compare them with your own products. It is best to find a professional (patent agent) to help you handle the above matters, and then make the next decision based on the judgment results. It doesn't necessarily mean that you will lose money if you are the defendant, but you will also make money sometimes, haha.