What does the sales base mean?

At the base of conference marketing. Conference sales refers to the sales method of organizing consumers to purchase on-site in the form of meetings, and selling products by looking for specific customers, home services and product explanations. The conference sales base means the base of MLM at conferences. The essence of conference marketing is to lock and develop target customers, output corporate image and product knowledge to customers in all directions, care for prospective customers as an expert consultant, and sell in a covert manner.