If you apply by yourself, you can go to the Hebei Provincial Administration for Industry and Commerce or apply online on the website of the Trademark Office of the State Administration for Industry and Commerce. If you are looking for an agent, there are many agency units in Shijiazhuang. Relevant information about agency units can be found online, and there are also recommendations on the Hebei Provincial Intellectual Property Office Information Network -> Service Guide -> Patent Agent Directory. Specific handling methods can be found on the Hebei Provincial Administration for Industry and Commerce website -> Service Guide -> Trademark Management.