Hi,
Once you purchase our product, we will send the "license.elic.xml" file to your purchase email, which you can then apply to your backend software. Our license file is valid for all versions released within one year from the date of purchase, meaning that once you purchase, you can use any version we release within that year permanently.
Below is the purchase page for our Spire.Doc for .NET product for your reference:
If you have any further questions about purchasing, we recommend sending an email to
[email protected], and we will assist you further.
Buy Spire.Doc for .NET:
https://www.e-iceblue.com/Buy/Spire.Doc.htmlHow to Apply the License:
https://www.e-iceblue.com/Tutorials/Licensing/Licensing.html#Apply_by_KeySincerely,
Doris
E-iceblue support team