/

Apply for a certificate,

From now on, the platform will only open applications and download services to the public from 10 am to 1 pm every day.

You can download it in a day.

Then download the signature software, and you can sign the software. The signature tutorial can be obtained from the following website

/thread-2490604- 1- 1 . html

The above answers were collected by dynamic Sunny. I hope others will not copy and respect the fruits of others' labor. Thank you.