1: Open and log in to the "Zhelizhan" APP, search the market supervision business in the search box and enter (Note: the electronic signature can only be used by individual users, if corporate shareholders signs to register a personal account for the legal representative of shareholders).

2. After entering, find and click the electronic signature to view the industrial and commercial electronic signature.

3: Click on the signature record, find the signature of the pen at the bottom, enter the signature password, and you can sign.

4. Then draw a signature and click Save to complete the signature process.

5. Finally, click Save and Submit to complete the electronic signature operation.