ZH
EN
JP
ES
RU
DE?? ??
?? 27??? ?? ??? ??? ??? ??.
?? ???? ?? ??? ??? ??? ??? ????: ??????, ?? ??, ?? ?? ???, ?? ??, ?? ??, ??? ??, ????, ???, ??, ???? ? ?? ??.
Korean Agency for Technology and Standards (KATS), ?? ??
Japanese Industrial Standards Committee (JISC), ?? ??
工業和信息化部, ?? ??
Group Standards of the People's Republic of China, ?? ??
American Society for Testing and Materials (ASTM), ?? ??
British Standards Institution (BSI), ?? ??
German Institute for Standardization, ?? ??
RO-ASRO, ?? ??
Association Francaise de Normalisation, ?? ??
International Electrotechnical Commission (IEC), ?? ??
Danish Standards Foundation, ?? ??
European Committee for Electrotechnical Standardization(CENELEC), ?? ??
KR-KS, ?? ??