// ADD A SIZE CHART FOR SINGLE PRODUCT PAGE;
add_action( 'woocommerce_product_meta_start', 'custom_action_after_woocommerce_product_meta_start', 6 );
function custom_action_after_woocommerce_product_meta_start() { 
    
    echo '<div class="CustomOrders">';
        echo '<ul>';
            echo '<li>';
                echo '<div class="headingOrders">"Request a Quote for Bulk Quantity"</div>';
            echo '</li>';
            echo '<li>';
                echo '<a class="custom_popup" href="javascript:void(0)">Request a Qoute Form</a>';
            echo '</li>';
        echo '</ul>';
     echo '</div>';
}