You can apply to register a WeChat public account yourself. There is no fee to apply. If you need certification, you have to pay a certification fee of 300 yuan to Tencent. Which type to choose depends on the functions you need. The steps for public account authentication are as follows:

1. Enter the official WeChat website and select "Public Platform".

2. Select "WeChat Authentication" in "Settings".

3. Click Verify, use the mobile phone you used when registering to receive the verification code, and then take the next step.

4. Click "Agree" and proceed to the next step, ready to fill in the relevant certification information.

5. Select "Enterprise Legal Person" and fill in the enterprise business license information, organization code certificate, enterprise public account information, as well as the identity information of the certifier, mobile phone number, and official application letter (stamped and signed) these materials.

6. Select "Optional Vocabulary" and fill in the name you need to authenticate. If it has been authenticated or the name has related trademark protection, the system will automatically prompt you.

7. Pay the fee and wait for verification.