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DE?????? ??? ??
?? 23??? ?????? ??? ??? ??? ??? ??.
?? ???? ?????? ??? ??? ??? ??? ??? ????: ????, ????, ????.
Korean Agency for Technology and Standards (KATS), ?????? ??? ??
International Organization for Standardization (ISO), ?????? ??? ??
TR-TSE, ?????? ??? ??
TH-TISI, ?????? ??? ??
GSO, ?????? ??? ??
KR-KS, ?????? ??? ??
YU-JUS, ?????? ??? ??
BE-NBN, ?????? ??? ??
RU-GOST R, ?????? ??? ??
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, ?????? ??? ??
PL-PKN, ?????? ??? ??
Professional Standard - Ferrous Metallurgy, ?????? ??? ??