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DE?? ???? ???
?? 26??? ?? ???? ???? ??? ??? ??.
?? ???? ?? ???? ???? ??? ??? ??? ????: ?? ? ?? ??, ?? ??, ?? ??, ?? ??, ?????, ?? ?? ???, ?? ??, ??? ??.
Professional Standard - Machinery, ?? ???? ???
工業和信息化部/國家能源局, ?? ???? ???
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, ?? ???? ???
國家能源局, ?? ???? ???
Professional Standard - Electricity, ?? ???? ???