It is not free to apply for a trademark. The Trademark Office stipulates that each piece of 300 yuan is required for trademark application, and the agency needs to charge a service fee, but it does not need to apply by itself. You can use the online self-service application tool for quick declaration and submit the declaration according to the prompts. The operation is simple. Recently, the platform is doing activities, and it only needs 290 yuan/piece, which is also very cheap.