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DE???? ??
?? 18??? ???? ??? ??? ??? ??.
?? ???? ???? ??? ??? ??? ??? ????: ?? ????, ?? ??(IT) ??, ????.
US-FCR, ???? ??
National Aeronautics and Space Administration (NASA), ???? ??
SCC, ???? ??
Association Francaise de Normalisation, ???? ??
Korean Agency for Technology and Standards (KATS), ???? ??
American Water Works Association (AWWA), ???? ??
RU-GOST R, ???? ??
Group Standards of the People's Republic of China, ???? ??
European Committee for Standardization (CEN), ???? ??