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GB 21257-2024 Chinese PDF

GB 21257-2024 Chinese PDF

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GB 21257-2024_Chinese: Norm of energy consumption per unit production of caustic soda, PVC, methane chloride (Chinese: 烧碱、聚氯乙烯树脂和甲烷氯化物单位产品能源消耗限额)
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English versions: GB 21257-2024
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