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Professional Standard - Agriculture, ??? ?? ???

Jilin Provincial Standard of the People's Republic of China, ??? ?? ???

Tianjin Provincial Standard of the People's Republic of China, ??? ?? ???

Group Standards of the People's Republic of China, ??? ?? ???

Liaoning Provincial Standard of the People's Republic of China, ??? ?? ???

農業農村部, ??? ?? ???

Anhui Provincial Standard of the People's Republic of China, ??? ?? ???

Shandong Provincial Standard of the People's Republic of China, ??? ?? ???





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