China National Standards

China Verification Regulation Aural Industry Standards English PDF List

  •  China "Verification Regulation Aural" Industry Standards English PDF List:
    • Standard  Code Standard Title Standard Class Order
    JJG 991-2004 Verification Regulation of Aural Impedance Audiometers
    阻抗听力计检定规程    		 China Metrological Standards
    Verification Regulation Aural
    English PDF

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