Technicians from the Hudong Vehicle Division of China Railway Taiyuan Group Co Ltd leverage digital intelligence to enhance the quality of vehicle maintenance, raising efficiency by 20 percent and helping ensure the safe carriage of heavy-loads on the Datong-Qinhuangdao railway. The division is in charge of checking the in-service vehicles on four major trunk lines and six branch lines, as well as the C80 heavy haul freight cars.