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DE?? ??? ?? ?? ?? ???
?? 8??? ?? ??? ?? ?? ?? ???? ??? ??? ??.
?? ???? ?? ??? ?? ?? ?? ???? ??? ??? ??? ????: ?? ??.
American National Standards Institute (ANSI), ?? ??? ?? ?? ?? ???
International Organization for Standardization (ISO), ?? ??? ?? ?? ?? ???
American Society of Mechanical Engineers (ASME), ?? ??? ?? ?? ?? ???
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, ?? ??? ?? ?? ?? ???
Korean Agency for Technology and Standards (KATS), ?? ??? ?? ?? ?? ???
Association Francaise de Normalisation, ?? ??? ?? ?? ?? ???