Thanks for posting in the Shopify Community, it's great to hear you're interested in joining Shopify. As another user mentioned, you can contact the suppliers directly to inquire about whether they can integrate with Shopify. You can also check out our app store to see all of the dropshipping suppliers that can be integrated with your store!
Please let me know if you have any questions and I'd be happy to help.
Greta | Shopify - Was my reply helpful? Click Like to let me know! - Was your question answered? Mark it as an Accepted Solution - To learn more visit the Shopify Help Center or the Shopify Blog