When batch creating products using Excel in V5, how do I specify suppliers and customers?

1. In the "Ownership of This Batch of Products" section of "Batch Create Products", set "Supplier for this batch of products" and "Customer for this batch of products". 2. If you cannot find the object you want to select, click "Add Supplier" or "Add Customer". 3. If the file already contains supplier or customer information, the content in the file will be used. 4. After confirming other settings, click "Next" in the bottom right to proceed to "Check and Correct".