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DE???? ?? ????
?? 7??? ???? ?? ????? ??? ??? ??.
?? ???? ???? ?? ????? ??? ??? ??? ????: ??, ?? ??, ?? ? ??, ??? ???.
Association Francaise de Normalisation, ???? ?? ????
Group Standards of the People's Republic of China, ???? ?? ????
農(nóng)業(yè)農(nóng)村部, ???? ?? ????
Hunan Provincial Standard of the People's Republic of China, ???? ?? ????
Yunnan Provincial Standard of the People's Republic of China, ???? ?? ????
Henan Provincial Standard of the People's Republic of China, ???? ?? ????