GB 17859-1999 Classified oriteria for security protection of computer information system
GB 50174-1993 Design code for electronic computer room
GB 9254-1998 Information technology equipment--Radio disturbance characteristics--Limits and methods of measurement
GB/T 2887-2000 Specification for electronic computer field
GB/T 9361-1988 Safety requirements for computation center field
DB31/T 272-2002 history
2008DB31/T 272-2008 General technical specification for security testing and evaluation of computer information system
2002DB31/T 272-2002 General technical specification for computer information system security evaluation
DB31/T 272-2002 General technical specification for computer information system security evaluation was changed to GB/T 23901.4-2019 Non-destructive testing—Image quality of radiographs—Part 4: Experimental evaluation of image quality values and image quality tables.