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Chinese Standard: 'GBZT229.4-2012'
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)See DetailStatusRelated Standard
GBZ/T 229.4-2012English145 Add to Cart 0--3 minutes. Auto immediate delivery. Classification of occupational hazards at workplaces -- Part 4: Occupational exposure to noise GBZ/T 229.4-2012 Valid GBZ/T 229.4-2012

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  GBZ/T 276-2016  GBZ/T 300.61-2017  GB 27421-2015  GBZ/T 229.4-2012