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VN-TCVN, ?????

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, ?????

Group Standards of the People's Republic of China, ?????

Professional Standard - Aviation, ?????

RU-GOST R, ?????

Heilongjiang Provincial Standard of the People's Republic of China, ?????

Professional Standard - Non-ferrous Metal, ?????

Professional Standard - Ferrous Metallurgy, ?????

American National Standards Institute (ANSI), ?????

未注明發(fā)布機(jī)構(gòu), ?????

American Society for Testing and Materials (ASTM), ?????

Professional Standard - Building Materials, ?????

工業(yè)和信息化部, ?????





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