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DEn-?? ???
?? 75??? n-?? ???? ??? ??? ??.
?? ???? n-?? ???? ??? ??? ??? ????: ?? ??, ????, ?? ???, ??, ????, ????, ?? ??, ??? ??.
Korean Agency for Technology and Standards (KATS), n-?? ???
Japanese Industrial Standards Committee (JISC), n-?? ???
農業農村部, n-?? ???
Natural Gas Processor's Association (NGPA), n-?? ???
- GPA RR-20-1976 ??-n-??, ??-n-?? ? ??-n-?? ???? K ?
- GPA RR-75-1984 N2-n-?????????, CO2-n-?????????, CH4-n-?????????, CH4-n-????? ? CO2-n-????? ???? ??-?? ?? ??
- GPA RR-19-1976 n-??, n-??, n-?? ? n-??? ???? ?? ???? ??? ???
- GPA RR-68-1983 ?? ??? ?? ??? ?? ???: ? + n-?? ? + n-?? ? + n-?? ? + n-??
- GPA RR-51-1981 ??? ?????? ???? ??? ??: ??????? ?? ??????? ???? n-???????? ????
Taiwan Provincial Standard of the People's Republic of China, n-?? ???
AENOR, n-?? ???
NL-NEN, n-?? ???
Group Standards of the People's Republic of China, n-?? ???
CZ-CSN, n-?? ???
European Committee for Standardization (CEN), n-?? ???
Association Francaise de Normalisation, n-?? ???
GSO, n-?? ???
International Organization for Standardization (ISO), n-?? ???
Danish Standards Foundation, n-?? ???
SCC, n-?? ???
British Standards Institution (BSI), n-?? ???
API - American Petroleum Institute, n-?? ???
Lithuanian Standards Office , n-?? ???
German Institute for Standardization, n-?? ???
American Society for Testing and Materials (ASTM), n-?? ???
KR-KS, n-?? ???
RO-ASRO, n-?? ???
National Health Commission of the People's Republic of China, n-?? ???
RU-GOST R, n-?? ???
Professional Standard - Chemical Industry, n-?? ???
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, n-?? ???
VN-TCVN, n-?? ???