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English versions: GB/T 20718
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 23327-2025
GB/T 18487
GB/T 19212.5-2025 Chinese PDF (GB /T19212.5-2025) GB 5009.18-2025 English versions: GB/T 20718GB T 19212. 5 2025_Chinese: Safety of transformers, reactors, power supply units and combinations thereof Part 5: Particular requirements and tests for isolating transformers and power supply units incorporating isolating transformers for general applications (Chinese: 5) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 19212. 5 2025
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