[AA] Safety
[Atlas] Atlas
[BB] Packaging
[CB] Watercraft
[CECS] Engineering Construction Standard
[CH] Mapping
[CJ] Urban Construction
[Contract] Model Contract & Agreement
[CY] Publication
[DA] Archives
[DB] Provincial Standard
[DL] Electricity
[DZ] Geology&Mineralogy
[EJ] Nuclear Industry
[FZ] Textile
[GA] Security
[GB] National Standard
[GBZ] Professional Health
[GJB] Military
[GY] Radio, Film and TV
[HAD] Nuclear Power
[HB] Aviation
[HG] Chemistry
[HJ] Environment
[HJB] Navy
[HS] Customs
[HY] Marine
[JB] Machinery
[JC] Building Material
[JG] Building
[JJ] Metering
[JR] Finance
[JT] Transport
[JY] Education
[Law] Law & Regulation
[LB] Tourism
[LD] Labor and Safety
[LS] Cereal
[LY] Forestry
[MH] Civil Aviation
[MT] Coal
[MZ] Civil Affairs
[NB] Energy
[NY] Agriculture
[QB] Light Industry
[QC] Automobile
[QJ] Aerospace
[QX] Meteorology
[SB] Commercial
[SC] Aquaculture
[SD] Hydropower
[SH] Petrochemical
[SJ] Electronics
[SL] Water Resources
[SN] Import&Export Inspection
[SY] Oil & Gas
[T/] Social Organization Standard
[TB] Railway Transport
[TD] Land Management
[TSG] Special Equipment Safety Specification
[TY] Sports
[WB] Material
[WH] Culture
[WJ] Military Engingeering Civil Product
[WM] Foreign Trade
[WS] Hygiene
[XB] Rare Earth
[YB] Metallurgy
[YC] Tobacco
[YD] Telecommunication
[YS] Non-ferrous Metal
[YY] Pharmaceutics
[YZ] Post