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DE??? ??????? ???
?? 29??? ??? ??????? ???? ??? ??? ??.
?? ???? ??? ??????? ???? ??? ??? ??? ????: ????, ?? ??, ?? ?? ???, ?????, ?? ??, ???, ?? ??, ??, ?? ??, ??.
Professional Standard - Non-ferrous Metal, ??? ??????? ???
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, ??? ??????? ???
KR-KS, ??? ??????? ???
Japanese Industrial Standards Committee (JISC), ??? ??????? ???
Korean Agency for Technology and Standards (KATS), ??? ??????? ???
Professional Standard - Ferrous Metallurgy, ??? ??????? ???
Professional Standard - Aviation, ??? ??????? ???
Professional Standard - Electricity, ??? ??????? ???
Professional Standard - Environmental Protection, ??? ??????? ???
Taiwan Provincial Standard of the People's Republic of China, ??? ??????? ???
GSO, ??? ??????? ???