请使用以下代码段。它将在“添加到购物车”按钮之后添加一个新按钮。代码注释很好，希望对您有所帮助。

add_action( \'woocommerce_after_add_to_cart_button\', function() {
    /**
     * If you need product data here you can set $product as global
     * then you can easily access product data through $product object
     *
     * global $product;
     */

    /**
     * You may have to build product customization link automatically
     * if the customization link follows same pattern and has product
     * id then you can store the customization product id in product meta
     * and retrive that meta using $product->get_meta( \'_customization_id\' );
     */
    $builder_product_link = \'http://builder.alltype.com/\';
    ?>

    <a class="button" href="<?php echo esc_url( $builder_product_link ); ?>"><?php esc_html_e( \'Customize Product\', \'text-domain\' ); ?></a>

    <?php
} );