Is it infringement to engage in export without the permission of the patentee?

What are the prerequisites for your export? If it is legally purchased and licensed, it is legal for you to export or resell it in China, but in the country where you export, no one owns the patent right, so there is no dispute. Otherwise, the patent is regional, and the patent of each country only takes effect in each country. If you export to that country and others have the patent right, then there is infringement in that country.