China National Standards

China Determination six metal GB Standards List

  •  China "Determination six metal" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 39994-2021 Determination of six metal elements (iron, calcium, magnesium, zinc, titanium,copper) in polyolefin pipe system
    聚烯烃管道中六种金属元素（铁、钙、镁、锌、钛、铜）的测定    		 China National Standards
    Determination six metal
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