What is the meaning of tobacco rolling visit sales

The sales model in which tobacco salespeople visit dealers in turn. Visiting sales is a traditional sales model of the tobacco industry, refers to the tobacco sales staff will communicate with retailers to understand their business situation, provide market analysis and sales strategy, and according to the retailer's inventory and sales, reasonable arrangements for the supply plan, and rolling refers to the sequence of visits to different dealers, so tobacco rolling sales visits refers to the tobacco sales staff to visit dealers sales model in turn.