Woocommerce | If page_id= .. { }

I am trying to apply specific functions to a certain page ID in Woocommerce. However, it does not seem to apply. I have looked at both Wordpress and Woommerce conditional tags (http://ift.tt/2eSLc2t).

The simple code I am testing is shown below, but even that is not working.

if ( is_product()) {
    echo ' HALLO sdfdsfsdfsdfsdf ';
}

I have also tried with page_id and post_id but cannot get this to work. I have added this code to my functions.php in my child theme.

Does anybody know to to write a specific function only for a specific product page (I know the value).