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DE?? ? ???
?? 5??? ?? ? ???? ??? ??? ??.
?? ???? ?? ? ???? ??? ??? ??? ????: ???, ?? ?? ? ??? ???, ????, ??.
Shaanxi Provincial Standard of the People's Republic of China, ?? ? ???
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, ?? ? ???
Yunnan Provincial Standard of the People's Republic of China, ?? ? ???
Liaoning Provincial Standard of the People's Republic of China, ?? ? ???