A Wholesale/Distribution Level of retail, shopping cart website

Hi There, I currently run a few ecommerce websites. And I am searching for someone with experience with a eCommerce, retail, shopping cart website that is on a WHOLESALE/DISTRIBUTION level. By the distribution level, I mean the site would have various features in place that is required for a distribution company that retails on a B2B (Business to Business) level. Some examples of such features would be - Ability to create different business accounts and log ins for clients, these clients will have different discounts or prices on goods based on what is being negotiated between the company, ability to allow clients to check order history and print out tax invoices for their accounting purposes etc. These are some of the basic functions required for a distribution, B2B level kind of website. It would be great if there you already have an existing website or script that serves this exact purpose for me to have a demo. As an existing site or script that does B2B/distribution level kind of website, would have all other necessary features that I would expect. The features listed above are just to exemplify what i mean by B2B/Distribution website. Another essential requirement is to have the ability to communicate in fluent english so communicating tasks and any discussion can be done efficiently and swiftly. If everything goes well, rest assured, I DO have lots of projects pending and requires LOTS of development. And it will definitely be a long and fruitful business relationship. Looking forward working with my future development partner Regards, Travis