Many Woocommerce newbies wonder how to load supplier XML,API or CSV product feeds into their Woocommerce store. Products will need your interest rate, the categories of different suppliers will be merged into one, the price changes of the price and the quantities in the warehouses will be synchronized. These are just some of the main things you have to deal with when using multi-vendor product feeds. To solve this problem, I use one web platform that provides loading and processing of products from  different suppliers and one plugin that synchronizes products with the Woocommerce store.

This platform is an XML, API, CSV processing platform for online stores
XML, API, CSV processing platform includes:

• Process any supplier’s XML, API, CSV in our system;
• Price markup by categories and price steps;
• Create sync categories based on vendor categories;
• Finding similar products, between suppliers;

To synchronize products from the platform to Woocommerce store I use WP All Import: WordPress XML & CSV Importer Plugin.

Using these two solutions can achieve a really good result.