On April 15, China Railway Group Limited(601390) and China State Construction Engineering Corporation Limited(601668) Academy of Sciences Co., Ltd. signed a strategic cooperation agreement at the headquarters of the joint stock company. According to the agreement, the two sides have determined the first batch of key cooperation contents, and will carry out comprehensive cooperation in the fields of standard internationalization, greening, bimbase, intelligent manufacturing and construction, achievement transformation and promotion, and urban renewal, so as to realize complementary advantages and win-win cooperation.