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GB standards are the China national standards; Prefix code GB are Mandatory standards, GB/T are Recommended standards; All products or service must be compliance with GB standards; If you want to export products or services to huge Chinese market, need ensure they are meet the requirements of GB china national standards;  We provide Chinese GB standards and English version GB standards  Lookup, Translate, Download, Imported Commodity GB standards Testing and Compliance review services.
  •  China "muff" GB Standards List:
  • Standard  Code Standard Title Standard Class Order
    GB/T 41318-2022 Ventilation muffler
    通风消声器
    China National Standards
    muff

    English PDF
    GB/T 7584.3-2011 Acoustics - Hearing protectors - Part 3: Measurement of insertion loss of ear-muff type protectors using an acoustic test fixture
    声学 护听器 第3部分:使用专用声学测试装置 测量耳罩式护听器的插入损失
    China National Standards
    muff

    English PDF
    GB/T 4498.1-2013 Rubber—Determination of ash—Part 1: muffle furnace method
    橡胶 灰分的测定 第1部分:马弗炉法
    China National Standards
    muff

    English PDF

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