Of course, it has been developed in China. Guangdong Youlian Interconnection Technology Co., Ltd., referred to as "Youlian Interconnection", has developed its own IM instant messaging system, which has become a fool's version of customer service system. It has CRM functions, real-time communication, intelligent reply, etc. It supports APP mobile terminal management of customer information and return visits, and can be used in websites, APP WeChat stations, public accounts and other scenes! At the same time, it also cooperates with website building service providers to enjoy high-quality services and high profits, making them more competitive in customer development and service providers.