Suppliers can choose to publish their products for your store only, a select few stores, or the entire Crowdship Marketplace.
To set up a private connection, they'll need to:
Navigate to their Retailers management page.
Search for your store name in the search bar.
Select the gear icon next to your store name.
Click "Approve Retailer".
Once you're approved, they can publish their products to "My Retailers" and only your store (and other approved retailers) will see those products.