Add to catalog/product_info: LINE 202:
<?php
echo tep_draw_button(IMAGE_BUTTON_REVIEWS . (($reviews['count'] > 0) ? ' (' . $reviews['count'] . ')' : ''), 'comment', tep_href_link(FILENAME_PRODUCT_REVIEWS, tep_get_all_get_params()));?>
<a display="block" target="_blank" href=<?php echo $product_info['products_url'];?>>
<button id="tdb7" type="button" class="ui-button ui-widget ui-state-default ui-corner-all ui-button-text-only ui-priority-secondary" role="button" aria-disabled="false">
<span class="ui-button-text"> <?php echo TEXT_PRODUCT_MANUFCACTURERS_URL;?> </span>
</button>
</a>
With red is a button to open the link in a new tab correctly.