Railnu Machinery (上海瑞纽机械股 (formerly known as Affiliated Factory of Shanghai University of Science and Technology)) is an enterprise that develops and manufactures non-standard equipment integrating light, machinery, electricity, and hydraulics in the fields of nuclear power and railways. It provides computer numerical control (CNC) equipment for rail welding production lines, hydraulic lifting machines, steam generators, damper series, and spent fuel container transfer devices.