To answer your question directly, you will need to find your own supplier(s). Here is a pretty good link from a well known supplier in the US on high level activities to open a new vape shop - How to Open a Vape Shop - Step by Step Instructions . I think you will just have to do some google searching to find a good supplier based on the type of store you open. Here is a link to a site that describes what you need to consider when choosing a supplier - Top Vape Distributors in the US - eCig One . I would also make sure you have a really good lawyer lined up to help you. You probably also will want to join one of the vaping associations to try to make industry contacts such as the American Vaping Association or the Vapor Technology Association. This is probably not a place to do that kind of research, it would be similar to going to AutoTrader.com and asking about opening a car dealership. Wrong audience. Good luck.
Morning Max Power...your feedback is very helpful. Thank you