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DE?? ???
?? 10??? ?? ???? ??? ??? ??.
?? ???? ?? ???? ??? ??? ??? ????: ?? ? ??, ??? ??, ?? ??, ??? ??.
Professional Standard - Construction Industry, ?? ???
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, ?? ???
Professional Standard - Medicine, ?? ???
Guizhou Provincial Standard of the People's Republic of China, ?? ???
Professional Standard - Commodity Inspection, ?? ???
Group Standards of the People's Republic of China, ?? ???
SCC, ?? ???