What is the difference between Xiamen Telecom and Xiamen Post and Telecommunications Group, and what kind of relationship do they belong to?

The above information is too comprehensive, but it misses the key of the questioner. Let me give you a brief answer. At present, Xiamen Telecom and Xiamen Post and Telecommunications Group have nothing to do with each other, but two different enterprises, which have business dealings with each other. Previously, Xiamen Post and Telecommunications Group was a third-level company of Xiamen Telecom and its predecessor, Xiamen Post and Telecommunications Bureau, that is, an employee-owned enterprise. But all this has changed a long time ago. The decoupling between Xiamen Telecom and post and telecommunications should be around 2004. Posts and Telecommunications Group was acquired by Cosmos Group and became a wholly-owned subsidiary of Cosmos Group. Supplementary note: Post and Telecommunications Group is the title of the tertiary industry company in Xiamen Post and Telecommunications Bureau era. In the era of telecom companies, it has been called Zongheng Group, and the word post and telecommunications has been removed. However, the tertiary industry of Xiamen Post Office still has the title of using posts and telecommunications, but it is not called Posts and Telecommunications Vertical and Horizontal Group.