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DE???? ??
?? 82??? ???? ??? ??? ??? ??.
?? ???? ???? ??? ??? ??? ??? ????: ?? ? ?? ?? ??, ?? ? ?? ??? ??, ????, ?? ??, ?? ??, ??, ?? ?? ??? ? ?? ????, ????, ??, ???? ??? ??, ?? ??, ?? ?? ??.
Association Francaise de Normalisation, ???? ??
GSO, ???? ??
Korean Agency for Technology and Standards (KATS), ???? ??
API - American Petroleum Institute, ???? ??
PL-PKN, ???? ??
Indonesia Standards, ???? ??
Professional Standard - Chemical Industry, ???? ??
Japanese Industrial Standards Committee (JISC), ???? ??
TR-TSE, ???? ??
RU-GOST R, ???? ??
Group Standards of the People's Republic of China, ???? ??
HU-MSZT, ???? ??
BE-NBN, ???? ??
PT-IPQ, ???? ??
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, ???? ??
Taiwan Provincial Standard of the People's Republic of China, ???? ??
IN-BIS, ???? ??
Defense Logistics Agency, ???? ??
Natural Gas Processor's Association (NGPA), ???? ??
KR-KS, ???? ??
International Organization for Standardization (ISO), ???? ??