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?? 45??? ????? ??? ??? ??.
?? ???? ????? ??? ??? ??? ????: ?? ?? ???, ?? ??, ?? ??, ?? ??, ?? ?? ??, ???? ??, ???? ??? ??.
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, ????
Professional Standard - Ferrous Metallurgy, ????
國家市場(chǎng)監(jiān)督管理總局、中國國家標(biāo)準(zhǔn)化管理委員會(huì), ????
HU-MSZT, ????
CZ-CSN, ????
Association Francaise de Normalisation, ????
European Committee for Standardization (CEN), ????
German Institute for Standardization, ????
BE-NBN, ????
Society of Automotive Engineers (SAE), ????
SAE - SAE International, ????
工業(yè)和信息化部, ????