Which four posts are the four posts of China Railway Fourth Bureau?

engineering and technical posts, business management posts, construction safety posts and materials and equipment posts.

1. engineering technical post: collect, sort out and archive all engineering data and data of increase or decrease of engineering quantity during the project construction, and prepare materials for the project settlement.

2. Business management post: responsible for establishing and improving the financial management system, accounting, analysis and evaluation system of the business management system, and implementing the financial system of the Group.

3. Construction safety post: publicize and implement the laws, regulations, standards and norms of production safety seriously, and inspect and supervise their implementation.

4. Material and equipment post: responsible for the comprehensive purchase application and warehouse management of various materials, equipment and equipment accessories in the workshop.