On December 21st 2018, executive general manager Li Guanxun of the utinity tunnel company of China Railway 17th Bureau Group Co., Ltd. and his delegation visited Yearning Engineering. Yearning Engineering president Xiaoping Geng, chief scientist Dr. Bo Wang accompanied the visit.  Mr. Li and his delegation visited the exhibition hall and held discussions with relevant personnel. During the discussion, manager of operation & maintenance department Haitian Yuan introduced Yearning’s research in the operation and maintenance of utility tunnel and the progress in the development of intelligent operation and maintenance platform. Both sides agreed that with the promotion of government departments, the construction of utility tunnel is in the ascendant, and the market of digitized and intelligent utility tunnel operation and maintenance has broad prospects. In the future, the two companies will strengthen the cooperation in the field of construction, operation and maintenance of utility tunnel.