2. Click "Legal Person Login" and enter the unified social credit code, legal representative's name and legal representative's ID number to log in.

3. Find the document that needs to be signed in My Documents, and then click the Sign button.

4. In the pop-up page, enter the password of the electronic business license and click the "Confirm" button.

5. After signing, you need to print the signature to confirm and affix the official seal, and upload it to the government service network.