20. Kuaituantuan is a product of Shanghai Dream Search Information Technology Co., Ltd. Based on the technology of SaaS tools, Kuaituantuan provides a tool for suppliers, shopkeepers and other people with private domain traffic to quickly publish group purchases, online bill collection and payment. At the same time, there are 20 big heads, which is a WeChat applet group buying tool to help merchants collect the common needs of community residents online and place orders and collect money online.