How long does it take for undergraduates of China Railway Fourth Bureau to become full members?

Three to six months. According to relevant data, at present, the probation period for recruiting people in all units in society is set at three to six months. China Railway Fourth Engineering Group Co., Ltd. is a large-scale construction enterprise with comprehensive construction capacity and a "benchmark" member enterprise of China Railway Corporation, a fortune 500 enterprise in the world. China Railway Fourth Engineering Group Co., Ltd. has four special qualifications for general contracting of railway, highway, housing construction and municipal public works, and five first-class qualifications for railway, highway, construction, municipal administration and surveying and mapping. It is one of the few construction enterprises in China and the first "four specialties and five armour" construction enterprise in Anhui Province.