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GB/T 21638-2025_Chinese: Microbeam analysis - Guidelines for electron beam microanalysis of defects in steel materials (Chinese: 微束分析 钢铁材料缺陷电子束显微分析方法通则)
English versions: GB 45246-2025
GB 45247-2025_Chinese: Norm of energy consumption per unit production of gas-steam combined cycle power set (Chinese: 燃气-蒸汽联合循环发电机组单位产品能源消耗限额)
English versions: GB/T 18109-2024
GB/T 17818-2025 Chinese PDF (GB /T17818-2025) GB 5009.137-2025 GB/T 21638-2025_Chinese: Microbeam analysis -GB T 17818 2025_Chinese: Determination of vitamin D3 in feeds High performance liquid chromatography (Chinese: D3 ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 17818 2025
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