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DE????? ???? ??? ??
?? 39??? ????? ???? ??? ??? ??? ??? ??.
?? ???? ????? ???? ??? ??? ??? ??? ??? ????: ?? ??, ??, ?? ? ? ??, ?? ??, ?? ??, ??????, ?? ??, ???, ????, ?? ??, ?? ?? ??, ?? ??, ????.
Professional Standard - Machinery, ????? ???? ??? ??
Professional Standard - Agriculture, ????? ???? ??? ??
Guangxi Provincial Standard of the People's Republic of China, ????? ???? ??? ??
Group Standards of the People's Republic of China, ????? ???? ??? ??
Professional Standard - Ferrous Metallurgy, ????? ???? ??? ??
American Society for Testing and Materials (ASTM), ????? ???? ??? ??
International Organization for Standardization (ISO), ????? ???? ??? ??
WRC - Welding Research Council, ????? ???? ??? ??
American National Standards Institute (ANSI), ????? ???? ??? ??
Professional Standard - Aviation, ????? ???? ??? ??
Heilongjiang Provincial Standard of the People's Republic of China, ????? ???? ??? ??
Korean Agency for Technology and Standards (KATS), ????? ???? ??? ??
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, ????? ???? ??? ??
Professional Standard - Non-ferrous Metal, ????? ???? ??? ??
Professional Standard - Chemical Industry, ????? ???? ??? ??
Japanese Industrial Standards Committee (JISC), ????? ???? ??? ??