if I buy 25 pieces of any item then we put same UPC code on all 25 item ???
>>>No, if you create one listing than use one UPC code. If you create 25 listings use 25 UPC codes.
When you buy product from wholesaler if product is neutral brand product it is suggested put sticker by yourself.But you can’t go for branding.See, if you want to go with private label product than only you have to go with branding.