What is the QQ group of Shenzhen Architectural Design and Research Institute Co., Ltd.?

In addition to the headquarters of Shenzhen General Hospital, there are the First Hospital, the Second Hospital and the Third Hospital, which are highly independent in administration. I have never heard that the company has a unified QQ group. For example, the Institute of Environment of General Hospital doesn't need QQ to go to work. During working hours, the intranet is not connected to the internet, and unified instant messaging software is installed on the intranet.