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24-2025_Chinese: Methods for chemical analysis of magnesium and magnesium alloys - Part 24: Determination of trace impurity elements contents - Glow discharge mass spectrometry (Chinese: 镁及镁合金化学分析方法 第24部分：痕量杂质元素的测定 辉光放电质谱法)
English versions: GB/T 31901-2024
GB/T 17889
507-2025_Chinese: Laser display devices - Part 5-7: Measuring methods of image quality affected by speckle for scanning laser displays (Chinese: 激光显示器件 第5-7部分：激光扫描显示在散斑影响下的图像质量测试方法)
English versions: GB/T 44855-2024
GB/T 17241.2-2024 Chinese PDF (GB/T17241.2-2024) GB 5009.302-2025 24-2025_Chinese: Methods for chemical analysisGB T 17241. 2 2024_Chinese: Cast iron pipe flanges Part 2: Class designated (Chinese: 2Class) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 17241. 2 2024
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