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DE??? ??
?? 8??? ??? ??? ??? ??? ??.
?? ???? ??? ??? ??? ??? ??? ????: ?? ? ?? ??? ??, ?? ?? ???, ??? ? ???.
Professional Standard-Ships, ??? ??
Professional Standard - Machinery, ??? ??
Group Standards of the People's Republic of China, ??? ??
國家市場監(jiān)督管理總局、中國國家標準化管理委員會, ??? ??
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, ??? ??