When shopping, when a person's transaction volume is lower than what he wants, or he wants to make a deal at a price lower than the original price, he finds people with the same shopping needs and makes an organized collective purchase. It can be said that the single purchase mode actually creates a new shopping mode, that is, single purchase. One-time shopping is to organize one-time shopping in a targeted way by collecting similar shopping needs in the same community, unit or region.

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The advantage of this model is to rely on the strength of many group members and then buy better goods at more favorable prices. Just like wholesale, it is definitely more favorable to buy more. Of course, the difference is that you don't need to buy goods in plural to enjoy preferential prices. Moreover, Pinduoduo is connected with a large number of social platforms such as WeChat and qq, so there is basically no shortage of group members.