Step 1: Choose a reliable third-party platform and register for certification (it is very important to prove that you are you in the network environment). You can generally make your electronic signature and the company's electronic official seal through the platform.

Step 2: Upload the document to be signed, fill in the customer's name and mobile phone number and send it (the signing order of both parties can be customized).

Step 3: The customer receives the short message containing the signature link on the mobile phone short message, authenticates the link according to the page prompts, generates a handwritten electronic signature and signs it.

The signature process can refer to the following figure: