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DE? ??
?? 19??? ? ??? ??? ??? ??.
?? ???? ? ??? ??? ??? ??? ????: ??? ? ???, ?? ???, ??, ?? ? ???, ?? ???.
Professional Standard - Ferrous Metallurgy, ? ??
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, ? ??
TH-TISI, ? ??
Professional Standard - Chemical Industry, ? ??
Taiwan Provincial Standard of the People's Republic of China, ? ??
British Standards Institution (BSI), ? ??
SCC, ? ??
International Dairy Federation (IDF), ? ??
Group Standards of the People's Republic of China, ? ??
GSO, ? ??
VN-TCVN, ? ??
RU-GOST R, ? ??
International Organization for Standardization (ISO), ? ??
Shanghai Provincial Standard of the People's Republic of China, ? ??