/**
 * @snippet       New WooCommerce/Products Admin Page
 * @how-to        Get tutoraspire.com FREE
 * @author        Tutor Aspire
 * @compatible    WooCommerce 3.5.6
 * @donate $9     https://www.tutoraspire.com
 */

add_action( 'admin_menu', 'tutoraspire_wp_dashboard_products_new_page', 9999 );

function tutoraspire_wp_dashboard_products_new_page() {
add_submenu_page( 'edit.php?post_type=product', 'New Page Title', 'New Page Menu Title', 'edit_products', 'new_page_slug', 'tutoraspire_wp_dashboard_products_new_page_callback', 9999 );
}

function tutoraspire_wp_dashboard_products_new_page_callback() {
echo '
New Page Title
';
// add your your HTML, PHP, CSS, jQUERY here
echo '
';
}