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DE8??? ?????
?? 21??? 8??? ?????? ??? ??? ??.
?? ???? 8??? ?????? ??? ??? ??? ????: ?? ??, ?? ??, ?? ??, ????.
Professional Standard - Non-ferrous Metal, 8??? ?????
GSO, 8??? ?????
Professional Standard - Energy, 8??? ?????
American Society for Testing and Materials (ASTM), 8??? ?????
未注明發(fā)布機(jī)構(gòu), 8??? ?????
Korean Agency for Technology and Standards (KATS), 8??? ?????
CZ-CSN, 8??? ?????
Japanese Industrial Standards Committee (JISC), 8??? ?????