To do a good job of sales, training a part of the really competent people is a key core element. In addition, the market is changing, the marketing model is also changing. Dealers need to solve the problems of incomplete sales channels, poor image, profit model, and so on, to make systematic adjustments in all directions, and then to standardize, process, and institutionalization of management. If you can sell your products as a service, and do a good job of the service, the store sales will naturally be good, in the depressed market environment, silver is aluminum profile dealers need to understand themselves, in-depth understanding of customers, find the right way, to fight our way through the rat race.