China National Standards

China 2:1H GB Standards List

  •  China "2:1H" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 34247.2-2018 Determination of the unsaturation of isobutene-isoprene rubber—Part 2:1H-NMR method
    异丁烯-异戊二烯橡胶（IIR）不饱和度的测定-第2部分：核磁共振氢谱法    		 China National Standards
    2:1H
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