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DE??? ??
?? 9??? ??? ??? ??? ??? ??.
?? ???? ??? ??? ??? ??? ??? ????: ?? ? ?? ???.
GSO, ??? ??
National Metrological Verification Regulations of the People's Republic of China, ??? ??
Association Francaise de Normalisation, ??? ??
Spanish Association for Standardization (UNE), ??? ??
PL-PKN, ??? ??
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, ??? ??