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DE???? ??? ???
?? 16??? ???? ??? ???? ??? ??? ??.
?? ???? ???? ??? ???? ??? ??? ??? ????: ??, ????, ??(??)? ?? ? ??, ???, ??, ??, ???, ?? ???, ??, ?? ?? ??, ???.
Group Standards of the People's Republic of China, ???? ??? ???
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, ???? ??? ???
CN-DB 3, ???? ??? ???
中華人民共和國國家質(zhì)量監(jiān)督檢驗(yàn)檢疫總局、中國國家標(biāo)準(zhǔn)化管理委員會, ???? ??? ???
Shanxi Provincial Standard of the People's Republic of China, ???? ??? ???
Liaoning Provincial Standard of the People's Republic of China, ???? ??? ???
Jiangsu Provincial Standard of the People's Republic of China, ???? ??? ???