If you want to apply for it yourself:
From the patent application to the acceptance notice, you don't have to pay any fees except your mailing and paper fees. However, after receiving the notification of acceptance, the patent application fee must be paid within two months from the date of filing. The application fee is as follows: (under the condition of slowing down the handling fee)
Invention: 185 yuan; Utility model; 75 yuan; Design: 75 yuan
If you are looking for an intermediary:
In addition to the above application fee, you have to pay the corresponding agency fee to the agency. The cost is about:
Invention: 2500-5000, utility model: 1500-2500, and design: 1000-2000.
In addition, for the invention, you should prepare a substantive examination fee of 375 yuan.