Add a liquid object in a hyperlink href

Shopify Partner
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I need to add a link at the end of each product description that will direct client to an external page with a 3d view of the product.


I would add a line to my product.template file, but I don't know how:


I need something like this:


DISCOVER MORE<a href="https://example/{{ product.sku }}.com">HERE</a>


I also would need to use just the first 4 digits of my product SKU ... I believe with some TRUNCATE code...


Is someone able to help me?


Thank you!