Entrusted by RMTC, Shucheng configured 40 kinds of standard sources and reference material for 34 units of the National Radiation Environment Monitoring Network (Nuclear and Radiation Safety Center, Technology Center, 31 Provincial Radiation Stations, Qingdao Environmental Monitoring Center Station), including radioactive solution, solid reference material, aerosol sources, and biological reference material, soil and sediment, point sources, sealed sources.