It is easy for China Railway Company to undertake the national railway machinery engineering project, with abundant funds and very high salaries for its employees. However, the third company of CCCC Company 4 is the one with poor treatment among several branches, and the salary is not so high compared with other companies, so China Railway is better than the third company of CCCC Company 4.
CCCC Fourth Engineering Bureau generally refers to CCCC Fourth Engineering Bureau Co., Ltd., and candidates can apply for this unit through examinations and interviews.