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中华人民共和国劳动和劳动安全行业标准有毒作业分级检测规程LD81-1995Rulesofinspectforclassifiedstandardofoperationwithexposuretotoxicchemicalsintheworkplace...
People’s Republic of China labor and labor safety industry standard toxic grade classification procedures LD81-1995Rulesofinspectforclassifiedstandardofoperationwithexposuretotoxicchemicalsintheworkplace ...