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Product attributes are generally available for advanced parsers only.
By default, all attributes are added as local attributes and will display as the product specs list.
You may need to add some global attributes. To do so, go to
Products > Attributesand create the desired global attributes before importing products.
Global attributes are taxonomies, so don't create too many of them because they can significantly slow down your website.
Archive pages are available for global attributes. To filter products, you can also use WooCommerce widgets or plugins.