Is there a way to insert an icon that indicates that there is a pdf?

Is there a way to use it with WP All import?

I have tried to put technical sheets, but it does not accept the values ??and only one letter appears in each field.

Quiero tener esta funcionalidad en formulario para crear productos desde el Front, hay un shortcode o algo que me pueda servir?

Hello, I have added several documents to a product but updating the product deletes the documents.
I have tried several themes and the same thing always happens.
Regards.