Specific methods:
1: install free signature
2: Run Free Signature
3: Options-Settings-Signature Certificate and Signature Tooth Select the certificate and tooth you want to use!
4: Return to the main interface of free signature
5: Add Task-Find Software to Sign-Options-Add-Sign!
6: This will automatically return to the main interface! Option-Execute!
7: The signature speed is very fast! There is a progress bar flashing Jimo! If other settings have not been moved! Then you can look in the original folder! If the suffix is signed, it is already signed.
You should apply for one yourself at Kimchi or Lexun.