WooCommerce Brands - display brand image on single product page

functionality-plugin.php

<?php
// This is add-on for official WooCommerce Brands plugin -> https://woocommerce.com/products/brands/
// To make this add-on to work, all code must be added to WP functionality plugin -> https://css-tricks.com/wordpress-functionality-plugins/

add_action( 'init', 'eworkshop_remove_actions' );
function eworkshop_remove_actions() {
    // WooCommerce remove brand from single product page
    remove_action( 'woocommerce_product_meta_end', array( $GLOBALS['WC_Brands'], 'show_brand' ) );
}
// WooCommerce display brand image on single product page
add_action( 'woocommerce_product_meta_end', 'wc_brand_image_single_product', 999 );
function wc_brand_image_single_product() {
global $post;
    $brands = wp_get_post_terms( $post->ID, 'product_brand' );
    if ( $brands )
        $brand = $brands[0];
    if ( ! empty( $brand ) ) {
        $thumbnail = get_brand_thumbnail_url( $brand->term_id );
        $url = get_term_link( $brand->slug, 'product_brand' );
        $name = esc_attr( $brand->name );
        echo '<span class="posted_in">Brand: <br><a href="' . $url . '"><img class="woocommerce-brand-image-single" src="'. $thumbnail . '" alt="' . $name . '" style="max-width:150px;"></a></span>';
    }
}