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

Professional Standard - Education, ????? ??

International Electrotechnical Commission (IEC), ????? ??

中華人民共和國國家質(zhì)量監(jiān)督檢驗檢疫總局、中國國家標(biāo)準(zhǔn)化管理委員會, ????? ??

GSO, ????? ??

IEC - International Electrotechnical Commission, ????? ??

Korean Agency for Technology and Standards (KATS), ????? ??

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

國家市場監(jiān)督管理總局、中國國家標(biāo)準(zhǔn)化管理委員會, ????? ??





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