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安全生产行业标准AQ4204-2008《呼吸性粉尘个体采样器》经国家安全生产监督管理总局批准,已于2009年1月1日起实施。该标准是对LD40-1992《呼吸性粉尘个体采
Safety Industry Standard AQ4204-2008 Respiratory Dust Sampler was approved by the State Administration of Work Safety and has been implemented since January 1, The standard is for LD40-1992 "Respiratory Dust individual mining