1. Open the electronic signature platform and select the file signature function.

2. Upload the document that needs to be signed.

3. Fill in the information of the signer, including name, mobile phone number, etc.

4. Select the signature style, which can be text, pictures, etc.

5. After confirming that the signature information is correct, click the Confirm Signature button.

6. Wait for the platform to verify and process the file, and then download the signature file.