夏凉产品属销售高季节性商品，常规产品和老品牌每年真正只有３个月的销售旺季，而许多新产品往往只能在新上市的一年中昙花一现。为此，绝大部分供货商和零售商家对夏凉产品的上市与促销采取“短期行为”，即简单划块地盘，匆匆上货，迅速热卖，季末抛售等做法，以获取所谓“? Summer cool products are selling seasonal products, regular products and old brands every year, really only three months of sales season, and many new products are often only in the new year of the blip. For this reason, most suppliers and retailers adopt “short-term behavior” on listing and promotion of summer cool products, that is, simple block plots, quick delivery, rapid hot sale and selling by the end of the quarter to obtain the so-called “?”