Hello,
This demo is using a custom layout for a single product page. The product page is created in the Woocommerce builder: https://xtemos.com/docs-cat/woocommerce-layouts-builder/?theme=woodmart
You can find the template in the Dashboard > Layout > Single product.
You need to configure the “Product Additional Information table” https://gyazo.com/7121f482e3cfa2bdc33ed2b65cc46315
If you have any questions, please feel free to contact us.
Best Regards,