For now the commodity, the ability to sell is a good thing, there’s money to make. So now all major supermarkets are concentrated in the set sales model because this model is really good, only to quickly sell the goods but also to avoid the accumulation of goods caused by the quality of the above problems, Moreover, this model is a two-way process of benefit, the customer here, too, to spend the same money can buy many goods this is not it? For the customer who is really good, so now what the supermarket promotions will have the time to go buy a lot of people, this is the so-called concentrated sold.