The answer is yes.
However, you need to write and submit the patent application documents yourself, and then mail them to the State Intellectual Property Office by registered mail, so that you can register a patent electronic application account and apply electronically.
The reason they say they need to find a patent and trademark firm or agency is because they cannot write patent application documents themselves, so they have to find a specialized patent and trademark firm or agency to apply on their behalf.
In addition, if you do not know much about this aspect, it is best to entrust an agency to apply, so as not to affect the protection of your rights. You can also find this unit, which is professional and reliable.
Patent literally refers to exclusive rights and interests. The word "patent" comes from the Latin word Litterae patentes, which means a public letter or public document. It was used by medieval monarchs to prove certain privileges, and later referred to the exclusive rights certificate signed by the British king himself.
In modern times, a patent is generally a document issued upon application by a government agency or a regional organization representing several countries. This document records the content of the invention and creation, and is produced within a certain period of time. A legal state in which a patented invention can generally be implemented by others only with the permission of the patentee. In my country, patents are divided into three types: invention, utility model and design.