Submits All Product Variants: Variant collection choices in the results of the Shopping search boost ctr and Orders. Improved Impressions are part of titles as alternative choices.
Unique one ads: Promotions Feed for all and particular ones goods. Let searchers see ads that run on your site, Get ctr enhanced.
Uses google's app api: Lets you upgrade items within 20 minutes. Stock Status, price, Title, definition, sku, pictures, Promotions, all changed within 20 minutes.