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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 "ratios" GB Standards List:
  • Standard  Code Standard Title Standard Class Order
    GB/T 37848-2019 Determination of strontium isotopic ratios in aqueous solution
    水中锶同位素丰度比的测定
    China National Standards
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    GB/T 9574-2017 Rubber and plastics hoses and hose assemblies—ratios of proof and burst pressure to maximum working pressure
    橡胶和塑料软管及软管组合件 验证压力、爆破压力与最大工作压力的比率
    China National Standards
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    GB/T 9574-2001 Rubber and plastics hoses and hose assemblies--ratios of proof and burst pressure to design working pressure
    橡胶和塑料软管及软管组合件 试验压力、爆破压力与设计工作压力的比率
    China National Standards
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    GB/T 31231-2014 Determination of zinc and lead isotopic ratios in aqueous solution―Multiple-collectors inductively coupled plasma mass spectrometry
    水中锌、铅同位素丰度比的测定 多接收电感耦合等离子体质谱法
    China National Standards
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    GB/T 2927-1994 Optical printing ratios forenlargement and reduction of motion-picture film images--specification
    电影影片画幅放大或缩小光学印片比率技术要求
    China National Standards
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    GB/T 26599.1-2011 Lasers and laser-related equipment - Test methods for laser beam widths, divergence angles and beam propagation ratios - Part 1: Stigmatic and simple astigmatic beam
    激光和激光相关设备 激光光束宽度、发散角和光束传输比的试验方法 第1部分:无像散和简单像散光束
    China National Standards
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    GB/T 21198.2-2007 Determination of precious metals in precious metals jewellery alloys - Method using ICP spectrometry - Part 2:Platinum jewellery alloys - Determination of platinum - Method using the intensity ratios of all minor constituents with reference to platinum
    贵金属合金首饰中贵金属含量的测定 ICP光谱法 第2部分:铂合金首饰 铂含量的测定 采用所有微量元素与铂强度比值法
    China National Standards
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    GB/T 14431-1993 Protection ratios and minimum usable field strengths required in thd radio services
    无线电业务要求的信号/干扰保护比和最小可用场强
    China National Standards
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    GB/T 13071-2010 Geological waters samples - Determination of radioactive ratios 234U/238U and 230Th/232Th - Extraction chromatograph and alpha spectrometry measure
    地质水样 234U/238U、230Th/232Th 放射性活度比值的测定 - 萃淋树脂萃取色层分离 α 能谱法
    China National Standards
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