A B2B online ordering system for wholesale, manufacturing, and distribution companies fundamentally differs from a B2C shopping cart. It needs special features that are not found or required in online retailing. Trying to make a B2C system do the job of a B2B system will likely end in frustration. It is better to start with an eCommerce system specifically designed for your needs. Some key components separate B2B online ordering systems from consumer shopping carts.