What is the name of the subordinate company of the third-level subsidiary?

Dear, I'm glad to answer your question: how to address the subordinate enterprises of the same enterprise? The answer is: there are two main types of names for subordinate companies and departments by the head office: ① full name. That is, the full names of subordinate companies and departments, such as Changsha Power Supply Company and Ideological and Political Work Department, with place names. This is generally used in very formal occasions, reading documents and other occasions. ② abbreviation. In other words, it is a simple name for subordinate companies and departments. For example, Changsha Power Supply Company is called Changsha Company or even Changsha directly, and the Ideological and Political Work Department is called the Ideological and Political Department. This is usually used as a verbal address. Dear, I found the following information for you: 1. If a document is sent to all subordinate units, it is generally called "subsidiary, branch and company department". 2. If you only send documents to a certain department, it is generally called "Group XX Company, Company XX Department".