All patent application documents will be sent to China National Intellectual Property Administration Patent Office, where there is no problem of applying for patents in different places.
Patent application procedures: confirm the type of patent to be applied, search for the same type of patent, search independently, or entrust an agency to conduct a more comprehensive search, prepare application documents, submit them to the application step, get the acceptance notice, and conduct substantive examination (especially invention patents). After the approval, you can directly enter the authorization stage.