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DE?? ??
?? 252??? ?? ??? ??? ??? ??.
?? ???? ?? ??? ??? ??? ??? ????: ??????, ??, ?? ??, ?? ? ?? ??, ??? ??, ???? ?? ? ??, ?? ? ?? ?? ??, ??, ??? ? ???, ?? ??, ??, ???, ??? ??, ?? ??, ??, ?? ? ??? ?? ? ??, ?? ?? ??, ??, ??? ? ??? ?????, ??? ??, ?? ?? ??, ??? ??, ?? ?? ???, ???, ??, ?? ?? ? ??? ???, ??? ? ???.
National Metrological Verification Regulations of the People's Republic of China, ?? ??
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, ?? ??
Professional Standard - Railway, ?? ??
國家鐵路局, ?? ??
German Institute for Standardization, ?? ??
Korean Agency for Technology and Standards (KATS), ?? ??
BR-ABNT, ?? ??
Japanese Industrial Standards Committee (JISC), ?? ??
Standard Association of Australia （SAA）, ?? ??
Association Francaise de Normalisation, ?? ??
PL-PKN, ?? ??
DIN, ?? ??
Taiwan Provincial Standard of the People's Republic of China, ?? ??
SCC, ?? ??
HU-MSZT, ?? ??
Spanish Association for Standardization (UNE), ?? ??
Indonesia Standards, ?? ??
IT-UNI, ?? ??
BSI, ?? ??
RO-ASRO, ?? ??
JP-JARI, ?? ??
國家能源局, ?? ??
British Standards Institution (BSI), ?? ??
Group Standards of the People's Republic of China, ?? ??
United States Navy, ?? ??
International Electrotechnical Commission (IEC), ?? ??
European Committee for Standardization (CEN), ?? ??
IX-UIC, ?? ??
Danish Standards Foundation, ?? ??
Lithuanian Standards Office , ?? ??