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GB 7957-2023

Chinese Standard: 'GB 7957-2023'
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)See DetailStatusRelated Standard
GB 7957-2023English349 Add to Cart Days<=4 Safety technical requirement for cap lamps in coal mine GB 7957-2023 Valid GB 7957-2023

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